Normal basal temperature chart. Examples of basal temperature charts before pregnancy and during pregnancy

Reading the chart correctly basal temperature during pregnancy, even before a missed period, the expectant mother can track its onset. You also need to know what factors can distort the result so as not to mistake them for deviations in the development of pregnancy.

Characteristic indicators at different stages of the cycle

Basal temperature, as one of the methods for determining a day favorable for conception, is widely used nowadays, although the measurement does not provide a 100% guarantee and has a sufficient number of disadvantages. When planning a pregnancy, you need to start preparing in advance and, for comparison, take readings from at least 3-4 cycles, building a curve connecting daily temperature points.

Before we talk about building a digital axis, let’s figure out what normal values should be displayed on it:

End of the menstrual cycle

Upon completion menstrual bleeding in the first period of the cyclic process, the thermometer shows approximately 36.2-36.5°C. It is at these marks on the thermometer that the egg matures with the participation of estrogen, which controls this process.

Temperature before and after ovulation

On the eve of ovulation, there is a slight drop in temperature by a few tenths of a degree, and then an increase to 37°C and above. This indicates the release of the cell and its movement to meet the sperm in the fallopian tube.

An example of a graph of basal temperature during pregnancy before delay

After the fusion of germ cells, the graph of basal temperature during pregnancy before the delay (photo examples confirm this) consistently shows slight fluctuations between 37 and 37.5 ° C throughout pregnancy.

If fertilization does not occur, a few days before menstruation, a gradual decrease in temperature begins and from the first critical day it becomes 36.8°C and lower.

Pregnancy diagnosis according to schedule

Elevated temperature marks on the curve are the first indirect sign conception has occurred, then it will be confirmed by nausea, pain in the mammary glands, changes in mood, taste preferences, etc., and the final line will be marked by two identical stripes on the test.

Basal temperature chart during pregnancy before delay – 36.9°C

The moment of fertilization itself passes unnoticed for the woman, but implantation of the embryo into the endometrium can be recorded. In this case, the graph of basal temperature during pregnancy before the delay is 36.9°C or slightly less on days 5-7 after ovulation. Approximately this period of time is necessary for the fertilized egg to reach the uterus and begin implantation into its wall.

At this point you may feel slight nagging pain in the lower abdomen, and there is mild bleeding from the vagina, as a symptom of fetal attachment. The decrease will be visible for only a day, and then the curve will return to the values that were before the decline and will no longer deviate.

Signs that distort indicators

We looked at the normal course of pregnancy at early stages and its inherent adequate meanings. But sometimes the graph of basal temperature during pregnancy before the delay, examples have deviations, both in the direction of increasing and decreasing temperature values. They are caused by certain reasons related to the influence of internal and external factors on the woman's body.

When a shift in indicators occurs once, it can be attributed to errors in temperature measurements that occurred due to a completely understandable reason:

Insomnia;
Short sleep, less than 6 hours;
Cold;
Sexual intercourse 3-4 hours before measurement;
Excessive physical activity the day before;
Stress.

Dangerous deviations in the basal temperature chart during pregnancy

Ectopic pregnancy

If an increase of 37.5-38°C is observed and continues for several days, an inflammatory process in the woman’s reproductive system can be suspected. This could be an infectious disease, or possibly an ectopic pregnancy. Attachment of the fertilized egg to in the wrong place can cause a peculiar reaction with temperature jumps up and down and the curve turns out to be somewhat incorrect with atypical dips.

Frozen pregnancy or miscarriage

A decrease in indicators, with confidence in conception, below 36.9 ° C, is also a cause for concern. In this case, a frozen pregnancy or a threatened miscarriage is suspected. This state of temperature values is explained by a decrease in progesterone levels occurring due to fetal death. It is no longer necessary to support the development of the embryo; the corpus luteum gradually reduces its production, and the hormone content in the blood drops. He is no longer able to maintain elevated basal temperature numbers, and it drops.

If a threat of miscarriage is suspected, the temperature will be below 36.9°C on the chart during pregnancy before the delay.

Basal temperature chart during pregnancy before delay (video)

In this video, an obstetrician-gynecologist talks about how to correctly measure basal temperature during pregnancy before a delay.

To make sure that you are drawing up your basal temperature chart correctly during pregnancy before the delay, video materials and examples of girls on the forums will help you get rid of doubts about the sequence of actions and understand the temperature values.

Conclusion

When drawing up a temperature curve, one should not forget that each organism is characterized only by its own values, so it is not the numbers themselves that are important, but rather the difference between the first and second phases of the cycle, which should be no less than 0.4°C.

Dear women! Did you know that body temperature can be not only general, but also basal? Yes, yes, these are completely different things!

Do you know what the difference is between them, why measurements of basal temperature are needed at all, and what the thermometer readings should be during pregnancy? If not, we recommend that you read this article. It talks in detail about basal temperature and everything connected with it.
So let's get started!

Phases of the menstrual cycle and fluctuations in basal temperature: briefly about the main thing

Procreation is inherent in the body of every woman. The ability to bear children appears in adolescence with the arrival of the first menstruation.

Menstruation is a monthly process that occurs in a woman's reproductive organs, the purpose of which is to prepare the body for a possible pregnancy.

On average the duration of one menstrual cycle is 28 calendar days. However, the duration of the cycle for each woman is strictly individual and can range from 21 to 35 days. The main point is the constancy of menstruation throughout reproductive period women up to menopause.

Cycle fluctuations of 3-5 days in one direction or another are quite acceptable. There is nothing wrong if menstruation starts a few days later or earlier. A woman's body is very sensitive, and this happens for a number of reasons, such as changes in weather or stress.

However, any changes in the established rhythm, such as a delay of menstruation by 5-7 days, scanty or excessive discharge, cramps and pain in the lower abdomen, may be symptoms of some kind of malfunction female body. In such cases, it is advisable to consult a gynecologist.

Basal temperature: why measure it

Measuring basal temperature is one of the main methods for diagnosing ovarian function. For several decades now, gynecologists around the world have been advising women to keep a chart of basal temperature readings to determine the causes of infertility, monitor hormonal imbalances (if any) and monitor the condition. reproductive system women in general.

In addition, a properly constructed graph can be used to track without dangerous days to protect against unwanted pregnancy and enjoy intimacy with your loved one without additional contraceptive measures.

Who needs to keep a schedule?

Most often, women who dream of pregnancy face the challenge of keeping a schedule. If you are already waiting for a miracle, then, knowing what the basal temperature should be during pregnancy, you can easily navigate the state of your body without getting out of bed.

For expectant mothers who have just started planning their pregnancy, we recommend monitoring your cycles while measuring your basal temperature.

By filling out the chart daily, you can accurately identify the day of ovulation and calculate the most fertile days for conception. After all, the body is practically unpredictable, and many people who want to get pregnant often do not feel physical signs the onset of ovulation. And the usual calendar method and computer programs Calculating favorable days for conception are usually ineffective.

You can, of course, use tests to detect ovulation, but they are quite expensive and not always true. But the basal temperature chart is easy to use, accessible and always at your fingertips. By taking measurements throughout the entire cycle, you can easily “catch” ovulation, and therefore you will certainly not miss such a favorable moment for conceiving a baby.

Ovulation is a unique ability of the female body

Let's first clearly define what ovulation is. Ovulation is the release of a mature egg from the follicle, ready for fertilization. For most women, ovulation occurs in the middle of the menstrual cycle, thereby dividing it into two phases.

In the first phase, before ovulation, the basal temperature is always 0.4 - 0.6 degrees lower than in the second, after ovulation. normal cycle and in the absence of any diseases or hormonal imbalance, the temperature during and after ovulation should normally be higher than in the first phase.

How to correctly measure basal temperature and keep a chart?

Basal body temperature is measured in the mouth, under the tongue, in the vagina, or in the rectum. You can choose any method convenient for you - it does not matter. After the measurement, the result is recorded on a form, which can either be drawn out in a notebook by hand, or downloaded from the Internet and printed on a printer. In addition, especially for those ladies who keep up with the times, many online programs have been invented for tracking mercury readings. Choose any option you like and start measuring indicators. Based on the marks on the thermometer, a cycle graph is constructed in which ovulation and favorable days for conception.

There are several rules for the most precise measurement basal temperature. Follow these recommendations and your schedule will be as informative as possible:

1. It is best to start recording the thermometer data from the first day of menstruation - this way you will have a detailed picture of your activity. reproductive organs. In addition, by starting to keep a schedule from the first day of the cycle, you will not get confused in the transcripts. It will also be more convenient for you to track all changes in indicators throughout the full menstrual cycle.

2. You need to measure your temperature in the morning, after good sleep, preferably at the same time, and definitely without getting out of bed.
If you are pregnant and tracking your temperature to monitor the progress of your pregnancy, you should remember that the basal temperature during pregnancy during the day and evening is significantly different from the basal temperature in the morning! The most reliable results are only in the morning after sleep!

3. It is best to prepare in advance: in the evening, put a thermometer, a pencil and a form on the bedside table, so that immediately after waking up, without making sudden movements, measure the temperature and enter the readings into the chart.

4. It is best to use ordinary mercury thermometer- it will show a more accurate result than an electronic thermometer. It is advisable not to change the thermometer and use the same one.

5. The procedure should take 5-7 minutes if measured rectally or vaginally and 3-5 minutes if measured in the mouth under the tongue.

What can affect the thermometer readings?

1. Tiring business travel, climate change, intense physical activity, long-distance travel and air travel can significantly affect the measurement result.

2. Alcohol in large quantities, as well as taking hormonal and some medicines can radically change the thermometer readings.

3. Colds, ARVI, flu and other diseases accompanied by elevated body temperature will significantly change the basal temperature upward. Postpone measurement until complete recovery.

4. It should be remembered that a one-time or unsystematic measurement of basal temperature does not carry any useful information, on the contrary, when receiving false information, they cause unnecessary worries.

5. In order for the graph to be as accurate and informative as possible, measurement indicators are needed for a period of at least 3 menstrual cycles.

Chart instead of a pregnancy test

If you know what your basal temperature should be when you become pregnant, you can understand that you are already “pregnant” simply by studying your chart!

Everyone knows about pregnancy test strips. But only a few expectant mothers are aware of what the basal temperature should be during pregnancy. Most women planning motherhood do not know that the onset of a long-awaited event can be determined without blood tests and home rapid tests that respond to an increase in hCG (human chorionic gonadotropin). If you are not too lazy to keep a chart, this can be done simply based on the changes indicated in it.

You already know that before ovulation, basal body temperature should be 0.4 - 0.6 degrees lower than in the second phase of the menstrual cycle. By the end of the second phase, closer to the beginning of menstruation, it, as a rule, decreases by 0.3 degrees. If conception has not occurred, basal body temperature will begin to fall 1-2 days before menstruation. It also happens that the thermometer drops several notches lower on the day of menstruation.

If pregnancy occurs, then the indicators will not decrease, and this may be one of the reliable signs the onset of pregnancy.

Has a miracle happened? Basal temperature will give the answer

Some women who are expecting menstruation and are unaware of their interesting position, find that their overall body temperature is elevated in the evening, although obvious symptoms no colds. This is explained by the fact that the body of a pregnant woman reacts to the emergence of new life in the uterine area, and for this reason the body temperature rises by 0.1-0.4 degrees. If general condition If your health doesn't bother you, don't worry. This is absolutely normal.

And if the increase general temperature body does not happen to everyone, then basal temperature at early pregnancy even before the delay of menstruation, in most cases it will definitely rise to a level of 37-37.5 degrees. This is how the body produces intensive progesterone, the pregnancy hormone. The level of progesterone is rising - and along with it, the numbers on the thermometer “grow”.

Thus, knowing what basal temperature during pregnancy is considered the most indicative, you can find out about the birth of a new life at the earliest stages.

After the 21st week of pregnancy, the line on the graph gradually begins to descend to more low rates, because hormonal levels women returns to normal, so there is no point in continuing to keep a schedule.

Here is one of the options for what the basal temperature should be during pregnancy (graph), shown in the figure below.

Are you hoping to get pregnant this cycle, but your schedule doesn't look exactly like the picture above? Don't be upset! After all, even despite what basal temperature during pregnancy is considered normal, in your case the numbers may be slightly different. Remember the individuality of each organism.

If you have a slightly modified basal temperature during pregnancy, the graph may look slightly different. And if there are no significant fluctuations in indicators from the generally accepted norm, the thermometer column stands still or slowly but surely rises higher - most likely you are pregnant!

But despite the fact that we tried to clarify the question of what the basal temperature should be during pregnancy, we recommend dispelling doubts and finally being convinced of your interesting situation. Take a quick test at home, take a blood test for hCG, or visit your gynecologist.

Basal temperature during pregnancy is 37 and 36.9 degrees. Should I worry?

Some women who track their schedule over several menstrual cycles are confident that they know exactly what their basal temperature should be during pregnancy. And when the desired state occurs, they are alarmed to discover that her readings have frozen at 36.9-37 degrees and remain so for several days.

If the birth of a new life is confirmed by a test, blood tests, or during an examination by a gynecologist, then the basal temperature during pregnancy of 36.9-37 degrees causes a lot of anxiety to the expectant mother. However, there is no need to worry ahead of time. You need to carefully analyze all your charts. It is quite possible that your temperature readings have always been below generally accepted norms due to the individuality of your body. If your temperature was low before, then most likely, its freezing at around 36.9-37 degrees does not threaten your pregnancy at all and is absolutely normal.

However, if your readings were within the normal range, and suddenly began to drop below 37 degrees every day, you should play it safe and consult with your doctor in order to take timely measures to maintain the pregnancy.

High basal temperature: time to see a doctor

A high basal temperature can alert you just as much as a low one.
Elevated readings on the thermometer in early pregnancy, present throughout long period, can negatively affect the health of the woman and the fetus. Exceeding up to 37.5 degrees and above can lead to placental abruption, miscarriage or adversely affect the intrauterine development of the fetus.

A temperature during pregnancy of 37.9-38 degrees indicates that the body may have an infectious disease or some kind of pathology.

Also, such a high temperature may indicate ectopic pregnancy. If your basal temperature is elevated, we recommend immediately contacting a gynecologist.

Low basal temperature during pregnancy: should you worry?

Every woman's body is unique. Therefore, it is impossible to say for sure what the basal temperature should be during pregnancy in a single case. All women are different, and each pregnancy is exceptional and unique, just like fingerprints on your hands.

Remember that it is impossible to establish a single norm of thermometer data for all women in an interesting position. However, checking with your individual schedule, you can find out whether everything is in order with the beginning of the pregnancy and its development.

Indicators below 37 degrees are considered low. This may signal that complications are possible, such as a lack of progesterone and the threat of miscarriage. During a frozen pregnancy, basal temperature also usually decreases.

Do not worry if a low temperature occurs once during pregnancy - the readings may move down due to severe fatigue or due to some other changes in the woman’s body.

You should rest, calm down and take measurements several more times throughout the day. If the readings do not change or drop below 37 degrees, you should urgently consult a doctor who will conduct necessary inspection and a set of tests and will find out what happens with the development of pregnancy and hormonal levels women. In most cases, even if there is a threat of miscarriage, if you consult a gynecologist in a timely manner, the pregnancy can be saved.

What is the basal temperature during a frozen pregnancy?

Unfortunately, desired pregnancy does not always end long-awaited meeting mother and baby in the delivery room - sometimes a frozen pregnancy occurs, as a result of which the embryo dies before it has begun to develop. This happens by various reasons, which will be determined in the gynecologist’s office after a series of medical examinations.

Studies have shown that during a frozen pregnancy, the basal temperature almost always deviates from the norms established for a favorably developing pregnancy.

If this happens, progesterone ceases to be produced in the amount necessary to maintain the life and intrauterine development of the embryo, and accordingly, the mercury column will drop every day.

Remember that during a frozen pregnancy, the basal body temperature is always low and never rises.

If your readings suddenly drop sharply and the signs of pregnancy that you had previously observed (toxicosis, swelling of the mammary glands, sensitivity to odors, tearfulness) have disappeared, you should immediately consult a doctor.

We hope that in this article you found answers to all your questions and learned how to create your schedule. Now you understand why this is necessary and how to do it correctly, and you know what basal temperature during pregnancy is considered normal, and what should alert you and promptly signal the need to see a doctor.

We wish you good health!

The reproductive system is characterized by the menstrual cycle. If processes that did not exist before begin to take place in the female reproductive system, then menstruation will always signal this. Usually the signal is given in the form of absence of menstruation. The absence of bleeding also indicates pregnancy. Basal temperature will help determine the completed conception even more accurately. It is from this that one can accurately say that pregnancy has occurred.

We are accustomed to the fact that temperature can only be measured with a thermometer under the arm. They inserted it under the arm, waited a few minutes and assessed the result. This is how we measure body temperature. Temperature measurement internal organs a little different.

Basal temperature - measured in oral cavity, vagina or anus (rectum). The values obtained will always tell you whether ovulation has occurred or not. If the menstrual cycle is normal, the basal temperature until ovulation occurs is 37°C or lower. As you know, ovulation occurs in the middle of the cycle. If measurements show an increase in temperature by at least 0.4°, then ovulation has taken place. That is, the second phase of the cycle has begun. Before the onset of menstruation, about a day or two later, the temperature drops again. If the temperature does not drop and menstruation does not come at the appointed time, then the woman has become pregnant.

Why measure?

Temperature measurements are necessary to determine the moment of ovulation. The information obtained will help you calculate the best moment for pregnancy. If a woman is planning to have a child, then knowing the value of basal temperature will greatly increase her chances. With its help, it is always easy for a woman to determine when the egg is ripe for conception. It is believed that it is best to conceive a child at the peak of ovulation or a few days before it.

Measuring basal temperature can be considered as one of the methods of contraception. That is, with its help you can identify dangerous days when you need to carefully protect yourself.

Temperature helps to calculate the date of the next menstruation and check whether it is working correctly endocrine system. Of course, to obtain the information described, it is necessary to keep a special diary for several months, where the values of basal temperature will be recorded. Entries must be made daily.

The human body temperature changes throughout the day. It is influenced by multiple factors: stress, physical activity, food consumption and more. Therefore, it is recommended to measure your basal temperature immediately after waking up, without getting out of bed. At this moment, the woman and her organs are still absolutely calm. External factors have not yet been able to influence them. The temperature measured in this way is called basal (or main, basic).

How to take measurements

You cannot monitor changes in basal temperature while using oral contraceptives.
It is not recommended to take sedatives, drink alcohol or be treated with any hormonal medications during this period. The result will not be reliable.
You only need to take the temperature in the rectum. The mouth and vagina are not suitable for these purposes.
You need to start measuring from the very first day of your cycle.
Measurements should be taken after five to six hours of sleep, that is, in the morning.
You cannot get up from the pastel and perform very sudden movements with any parts of the body.
You cannot talk or look out the window at the light before taking measurements. Bright rays can irritate the eyes.
It is necessary to prepare a thermometer in the evening and place it next to the bed so as not to run for it in the morning. Before this, you need to reset the previous readings.
You should try to take measurements at the same time.
If you wake up early to relieve yourself, take your temperature before you wake up and go to the toilet.
Sleep should always be more than three hours. Only then will the readings be accurate.
Use the same measuring device every time. This can be an electronic or mercury thermometer. The first option is best.
Use a mercury thermometer to measure the temperature for about 10 minutes, and for an electronic thermometer 60 seconds will be enough. The duration of each day's measurements should always be the same.
If a mercury thermometer is used in measurements, then you need to take it only top part, and not for the mercury base.
Instructions must be recorded in a special diary. Using this data, you can also build a graph and present it in table form. In the same diary you need to indicate all sorts of conditions that could hypothetically affect the final result.

Possible errors in measurements

Basal temperature, which was measured for 3 months or longer, is considered more informative and truthful.

The woman suffered infectious diseases, which occurred with body temperature. It could be bronchitis, ARVI or flu.
Basal temperature was measured in absolute different places, V different times and under different conditions. For example, on one day the temperature was measured in the rectum, and on the next day the measurement was repeated in the vagina.
The woman was taking medications.
Before measuring your basal temperature, on the eve of this day, you drank an excessive amount of alcohol.
Throughout her menstrual cycle, the woman traveled on planes and arrived on long trips.
The woman was taking hormonal contraceptives.

What does basal temperature tell the doctor?

It is at the request of doctors that women often begin to measure their basal temperature. Typically this action is required in the following cases:

A woman cannot become pregnant for a year.
If a woman and her sexual partner are infertile.
If there are hormonal disorders.

In addition, a woman tries to measure her basal temperature in the following cases:

To increase the chances of pregnancy.
The woman wants to receive.
I would like to know exactly about the beginning of dangerous days for sex.
To monitor the processes occurring inside the body.

The information provided to the doctor about temperature fluctuations will provide the following information:

When does the egg mature and whether it matures at all?
Did ovulation occur after the egg had matured?
When is your next period?
Consider how correctly hormones are released from the ovaries depending on the phase of the cycle.
Are there gynecological problems?
How well does the endocrine system function?
Has conception occurred?

Pregnancy and basal temperature

From the 3-4th day of the menstrual cycle, the basal temperature drops to 36.5 and 36.8. It is at these values that the egg begins to mature. Two or one day before ovulation, the temperature drops. Then it rises to 37°C and higher.

A week before menstruation, the temperature begins to drop. This happens if conception has not occurred and the woman does not become pregnant. For high value basal temperature and the hormone responsible for its increase. Its production occurs immediately after ovulation occurs. In the absence of conception, the level of this hormone decreases, and therefore the basal temperature decreases. If pregnancy does occur, the level of progesterone remains at the same level, which means the temperature also remains high. To summarize, the basal temperature during pregnancy until the moment of delay is 37°C.

If a woman records her temperature every day, she will definitely notice its change. That is, seven days before the start of menstruation, the temperature, instead of the usual decrease, suddenly remains constant for several days. This indicates pregnancy.

Has conception occurred?

The high temperature value lasts as much as three days longer when compared with the phase corpus luteum(a special period that occurs after ovulation).
You can see a sharp jump in the chart below.
The phase of the released corpus luteum lasts more than 18 days.

To find out the fact of pregnancy in the earliest stages, it is necessary to measure basal temperature in a special way:

Take your temperature only at the same time.
Continue holding the thermometer for 7-10 minutes.
Do not accept sitting position before measurement.
Take readings as soon as they are received.
Do not take into account the readings obtained during ARVI, colds and inflammation.

Changed basal temperature is considered the first sign of pregnancy even before the delay itself. But this method is not reliable. An increase in temperature may indicate an emerging gynecological disease, about excessive physical activity, about infectious processes, about taking medications.

Basal temperature may decrease just before a miscarriage and in the case of a frozen pregnancy.

Basal temperature values during pregnancy

If a woman is pregnant and the temperature is 37°C. This is a borderline indicator. Here, a consultation with a gynecologist is necessary if this temperature persists for several days. 37°C can be either a normal value or indicate the beginning of changes in hormonal levels.
If a woman is pregnant and her basal temperature is 37.1-37.3°C. This normal value. It is achieved at the time of ovulation and remains constant during the first few months of gestation. The exact indicator is individual for each woman. If the threshold exceeds the norm by at least 0.8 degrees, no matter in which direction, this is already an alarming case.
If the woman is pregnant and the temperature is below 37°C. This always indicates a lack of progesterone. The value may signal a miscarriage or dangerous fetal death. This temperature is typical only for the first phase of the cycle. But during pregnancy this is not a good sign.
Temperature 36.6°C. and 36.7°C is considered harmless if in the very first cycle it was slightly lower (only by 0.4 degrees). This is easy to find out if a woman constantly kept a diary.
If the temperature during pregnancy is 37.6°C or higher. Most likely the woman started inflammatory processes in the small pelvis. Such a high temperature can also indicate an abnormal ectopic position of the fetus.

Fall in basal temperature during pregnancy

At 16 weeks, the temperature gradually decreases. In the future (from about 20 weeks) there is no reason to talk about measuring this temperature; it is then useless. If a temperature of 36.9°C in the earliest stages is considered dangerous, then in the fourth month of pregnancy this is a normal indicator.

Measuring specific temperatures during pregnancy will help monitor the condition of the fetus, but does not guarantee a successful pregnancy.

Recording basal temperature values

The results can be recorded in table or graph form. The table should contain the following:

Name of the month.
Day number of the cycle.
Temperature value.
Note.

The following data may be reflected in the “note” column: alcohol intake (whether or not), the nature of the discharge (moderate or heavy), if there were deviations in basal temperature, whether there was diarrhea, whether intimacy occurred in the evening or in the morning, whether sleeping pills were used. That is, all information that could have an impact on the indicators is reflected here. The described form is very easy to understand. The doctor can easily determine deviations from it.

The basal temperature chart is graphic image, which displays the Y line (the value of the basal temperature is indicated), the X line (the days of the month are indicated), the ovulation line and the middle line. There is not always an ovulation line. She divides the graph into two parts.

Drawing up a schedule

The graph shows the days of the menstrual cycle. Normally, this value is 28-30 days, but sometimes it is 21-35. For some women, the cycle length exceeds the specified limits. In this case, changes can take place both larger and smaller. Perhaps such women have ovarian dysfunction.
The graph should present all the information clearly enough. It should visually divide the entire period into two parts: the first phase and the second. The day of ovulation, usually the 14th, is marked by a clear black line. This is the most optimal period conception. That is favorable period It turns out from 12 to 14 days of the cycle. If just before ovulation the temperature did not drop, but at the very moment it increased, then most likely ovulation has already occurred.
The very first phase may be shorter or longer. The second phase should be a clear 14 days. But a 1-2 day difference is still allowed. If the second phase has become shorter by as much as 10 days, then it is considered insufficient. This is a reason to see a doctor. Normally, these two phases should be approximately the same.
It is necessary to consider the average values of both phases separately. If they differ from each other by 0.4 degrees or less, then most likely the woman has hormonal disorders. Here the situation will be clarified by an analysis of estrogen and progesterone.
If she comes on the expected day of menstruation, and the elevated temperature persists for 18 days, then pregnancy has most likely occurred.
If bleeding has begun and is quite scanty in nature, and the basal temperature is still high, then a miscarriage will most likely occur soon.
There is no need to worry if suddenly in the first phase the temperature rises one day, and the next day it becomes the same, normal. Most likely she was affected by some provoking factor.

Symptoms of urgent medical attention

You need to go to a gynecologist in the following cases:

Basal temperature rises very quickly.
In the middle of the menstrual cycle, the temperature rises very slowly.
The first phase lasts a very long time (more than 17 days).
The second phase is too short (less than 12 days).
The menstrual cycle is more than 35 or less than 21 days.
According to basal temperature, pregnancy did not occur, and menstruation did not come on time.
An anovulatory cycle is observed. This low temperature throughout the entire menstrual cycle.
Hyperprolactinemia (increased basal temperature for a month) is observed.

With an anovulatory schedule, the doctor pays attention to:

Constant delays and simultaneous failure to get pregnant.
Indistinct ovulation.
To high and low temperature in a cycle.
The onset of menstruation and a positive test.
For menstruation that lasts more than five days.

A schedule is simply necessary when planning a pregnancy. It is necessary to conduct it yourself if the long-awaited pregnancy has not occurred within a year.

If the doctor sees a serious hormonal change, he will give necessary recommendations and will force the couple to undergo monthly hormone tests. This method works well for childless couples.

This is a research technique based on the hyperthermic effect of progesterone on reproductive system. Basal temperature during pregnancy is rectal (oral or vaginal) readings obtained after a night's sleep in a state of complete body rest.

Measuring BT belongs to the main category of informative tests that determine the performance of the ovaries and reproductive system of a woman.

Unsuccessful attempts to get pregnant for a year or more.
If infertility is suspected in one of the partners.
Signs of hormonal imbalance.
Compliance with the recommendations of the gynecologist when planning pregnancy.
In order to prevent conception, the method accurately determines “dangerous days”.
As an experiment when planning a pregnancy with the gender of the unborn child.

Take notes

From the temperature graph you can find out the following processes.

When does the egg mature?
The day of ovulation or its absence.
Identify dysfunctions of the endocrine system.
Identify diseases gynecological nature, for example, inflammation of the appendages, hyperprolactinemia, endometritis, insufficiency of hormone production.
The time of the next menstruation.
Whether the pregnancy began with a missed period or unusual bleeding.
Assess how the ovaries secrete hormones relative to different phases MC, is there a shift or not.

Only a gynecologist can give an accurate interpretation of the basal temperature graph. However, you can make a preliminary assessment yourself if you know the norm and deviations of temperature values on the curve.

The rationale for the BT method lies in the analysis of the production of sex hormones, under the influence of which a decrease or increase in temperature indicators occurs in different days cycle.

In the first (follicular) phase, there is a release of estrogen, which causes the values to decrease to a minimum. Normally, when the follicle matures, the temperature should not exceed 37°C.

Immediately before the release of the egg, there is a slight decline in indicators. Then the temperature gradually rises to its maximum, which means the onset of ovulation.

At this moment, active synthesis of progesterone begins, which causes an increase in levels to 37.1–37.3°. Before menstruation, a slight decrease in values is again observed. During menstruation, the temperature is about 37°C.

This detailed description normal two-phase BT schedule. Any deviations may indicate disorders of the reproductive system or pathology.

How to measure basal temperature

Correct construction of the BT schedule requires strict adherence all recommendations of gynecologists. Any deviation distorts the indicators, which can lead to ambiguous interpretation by the doctor.

Algorithm of actions when measuring basal temperature at home.

The study is carried out daily, including periods of menstruation, for at least 3–4 months.
Any thermometer, digital or an ordinary thermometer. The device cannot be changed during the experiment.
To receive reliable results Temperature can be measured through the butt, vagina or mouth. Preferably rectally. The measurement method remains unchanged.
Night rest should last at least 4–6 hours.
When waking up, you should not get up, move, turn around, or even shake the thermometer. Therefore, in the evening, place a thermometer on your bedside table to measure your temperature while completely at rest.
The study is carried out in the morning at the same time. The optimal range is from 5 to 7 hours. A deviation of plus or minus half an hour is allowed.
Indicators obtained during the day are taken into account if a woman works at night. Sleeping for at least 3 hours is mandatory.
Temperature measurement is carried out for 5 minutes. The values are immediately indicated in the graph.
It is important to write down comments indicating the amount of bleeding and the impact of external factors. For example, drinking alcohol or having sexual intercourse the day before, colds, illnesses, abdominal pain, taking medications, etc.

Example:

Basal temperature chart

What should be the basal temperature after ovulation during pregnancy?

The first sign of conception is a delay in menstruation against a background of stable high performance BT, and there is no decline in values before menstruation.

A prerequisite is sexual intercourse two days before ovulation or on the day the egg matures. Basal temperature in different periods The menstrual cycle can change under the influence of hormones.

The onset of MCs is characterized by normal indicators temperatures around 37°C. In the second phase, under the influence of progesterone, BT will be higher. How to find out on a schedule that pregnancy has occurred.

Before ovulation, the readings are slightly lower than normal, and after the egg is released, the temperature rises sharply.
There may be a discharge that disappears within two days. This occurs due to damage to the endometrium when the zygote implants into the inner layer of the uterus.
A similar phenomenon is usually observed 7–10 days after ovulation. The graph shows a sharp jump in low temperature, which is called “implantation retraction.”
The difference in values before and after ovulation is approximately 0.4 – 0.5°C.
If the basal temperature continues to remain elevated when menstruation is delayed, then we can talk about successful conception.

Moment of ovulation

When using the IVF method, it is difficult to determine pregnancy using a BT schedule. Before egg transfer, the patient is prescribed progesterone medications, which cause an increase in rectal and general indicators.

Basal temperature during the pregnant cycle

Gynecologists, as well as endocrinologists and therapists, recommend maintaining a BT schedule throughout the first trimester of gestation. The rules for measuring during pregnancy remain unchanged.

After the fourth month, monitoring rectal indicators no longer makes sense. However, during egg implantation and up to the 20th week of pregnancy, the temperature should always remain at 37.1–7.3 ° C.

The BT table will show how a woman’s condition changes in the early stages of pregnancy, as well as signs possible complications. If the indicators begin to jump, that is, the graph shows a sharp decrease or increase in basal temperature, then we can talk about pathology during pregnancy.

Recession of BT, that is sharp drop temperatures up to 37 degrees, indicates a lack of progesterone production, which can lead to miscarriage. The woman is discharged hormonal drugs, for example, Duphaston.

If BT during pregnancy rises to 37.8° (or more) and lasts for several days, then this may be a consequence of infection or the development of an inflammatory process.

On later pregnancy, usually at the 40th week, BT rises to 37.4° and higher. High rates are observed before labor contractions.

BT for ectopic and frozen pregnancy

Gradual decline

Anembryonia (death of the embryo) is accompanied by a decrease in rectal indicators. The development of pathology is most often observed at the early stage of the formation of the fertilized egg.

The process of non-developing pregnancy occurs gradually. For some time, hormones continue to be produced by inertia by the cells of the chorionic membrane. Therefore, even against the background of fetal fading, signs of pregnancy persist.

If the graph shows that BT falls simultaneously with the appearance unpleasant symptoms(stomach pain, toxicosis and tension in the chest have disappeared), then you need to urgently run to a specialist.

A characteristic sign of a frozen pregnancy is when the basal temperature drops below the critical level of 37°, that is, it returns to the levels preceding conception.

There are cases when fetal development proceeds normally, without manifestations alarming symptoms. In this case, signs of anembryonia in the form of increased BT and malaise occur suddenly.

A high temperature of up to 37.8°C or more during pregnancy may occur due to the development of sepsis against the background of fetal decomposition. Therefore, any fluctuations in values require medical attention.

It is difficult to recognize an ectopic pregnancy in the early stages using a BT schedule. Normally, gestation should occur against a background of elevated temperatures.

Signs of ectopic pregnancy most often appear in the 5th week and later. BT rises more than 37.8°, accompanied by dark brown discharge, strong pain syndrome in the abdominal area and other unpleasant symptoms.

The condition threatens life and health and therefore requires immediate hospitalization.

Every woman has this picture

Basal temperature of a non-pregnant woman

Normally, in the luteal phase of the menstrual cycle, BT is around 37.1–7.4°. When planning conception, sexual intercourse is recommended to be carried out 1–2 days before or on the day of ovulation.

In the absence of pregnancy, the indicators of a normal two-phase graph display the following values.

The first sign is that on the 7th–10th day after ovulation, implantation of the egg occurs, which is reflected in the curve sharp decline BT less than 37°. There may be minor bloody discharge against the background of endometrial damage. If there is no implantation retraction on the curve, then pregnancy has not occurred.
The second sign is that with successful implantation, the schedule becomes three-phase. BT remains above 37.1°. In this case, there is a delay in menstruation. The main factor is that, in contrast to the schedule with confirmed pregnancy, before menstruation there is a slight decline in rectal indicators.

An example of a BT schedule in the absence of pregnancy:

No pregnancy

Reviews

The BT schedule determines the state of a woman’s reproductive system, which is why gynecologists recommend it as an auxiliary tool when planning pregnancy.

The method is relevant for those who have problems with natural conception.

Alevtina Kosheleva:

I have an unusual menstrual cycle; doctors say such a long cycle is rare. Pregnancy did not occur for a long time; it was unclear about the days of ovulation. My periods changed. The gynecologist advised me to keep a BT schedule. This is the only way to give birth to a son.

Marina Klimenko:

I was happy about the week delay, BT was 37.3, I thought I was pregnant. Suddenly my period started. The doctor said that this happens. According to the schedule, she determined that this was a continuation of the second phase, and not conception. Moreover, it revealed disorders that interfere with the development of pregnancy.

Thank you 0

gynecologist, pediatrician

How to determine pregnancy without a pharmacy test, gynecologist and laboratory tests? Many girls use a simple home method– measurement of BT (basal temperature). After all, basal temperature during early pregnancy differs from BT non-pregnant woman.

For decades, obstetricians and gynecologists have recommended this method even to those expectant mothers whose “pregnant” status has already been confirmed. It is believed that a sharp change in the BT schedule in the first weeks may indicate disturbances in fetal development.

Is this really true? What do modern doctors think about this method?

The method was invented in England more than 60 years ago. Doctors found that the temperature inside female body varies depending on the period of the menstrual cycle. This happens under the influence of hormones. Therefore, according to the BT schedule, you can understand whether the ovaries are working correctly - whether they produce necessary hormones. You can also find out whether a woman is ovulating, that is, whether a full-fledged egg is released from the follicle.

BT is measured throughout the entire cycle, in the morning, immediately after waking up, without getting out of bed. Temperature is most often measured in anus. Less often - in the mouth or vagina. The result is entered into a special table. The template for measuring BT can be downloaded right here. To do this, click on the image and download it. You can fill it out directly on your computer or print it out.

Should I trust this method?

Just 15 years ago, all gynecologists required patients to measure BBT. Many modern doctors refuse this method. Many factors can affect your basal temperature, from thyroid problems to alcohol intake. So the method is not particularly accurate.

Modern gynecologists have more advanced diagnostic methods in their arsenal:

Ovulation tests, which quite accurately determine the day the egg leaves the follicle. With their help, you can find out whether there is ovulation or an anovulatory cycle;
Ultrasound, in particular folliculometry (several ultrasounds during the cycle), which allows you to assess the maturation of the follicle;
Hormone tests: estradiol, progesterone and others;
To determine pregnancy, pharmacy tests and hCG analysis are suitable (you can donate blood, or you can determine the level).

However, the BT method still has its adherents both among doctors and patients. There are good reasons for this:

This method is completely free;
It is convenient and can be used at home;
It is painless and absolutely safe. But doctors still have no consensus on the safety of ultrasound;
If you measure correctly, understand the nuances and follow all the rules, then it can tell you a lot about women’s health.

How to determine pregnancy before delay

How to measure basal temperature to determine pregnancy?

In fact, the method involves measuring not only in the days before menstruation, but throughout the entire cycle. The fact is that you need to analyze not some single value on a single day, but the entire BT chart. Better yet, graphs of several cycles - then the difference will be noticeable.

Here is the classic two-phase chart of a non-pregnant woman. At first, during menstruation, the temperature is slightly elevated, then it drops to a level of 36.2-36.4. Then ovulation occurs, and the temperature rises sharply to 36.9-37.1. Then, before menstruation, it decreases slightly - to 36.8.

Naturally, these figures are conditional and approximate. The trend is important: slightly increased temperature – decreased – sharp increase in the second phase – a slight decrease before menstruation.

The basal temperature chart during pregnancy looks different.
In the first phase and during ovulation everything is the same. But the basal temperature after ovulation, if fertilization has occurred, will be completely different. In the second half of the cycle, so-called implantation retraction may occur. The temperature, which rose to 37 degrees or higher after ovulation, suddenly drops by about 0.3-0.6 degrees. This may mean that embryo implantation has occurred, that is, the fertilized egg has attached itself to the wall of the uterus.

Then BT rises again to a value of 37-37.6. Basal temperature during pregnancy does not fall before the delay, but remains high even in the most last days cycle. After the delay, it also remains elevated. This is the hormone progesterone “working”, it slightly increases the temperature.

"Pregnant" charts

We looked at the “classic” BT chart. But life is much more diverse than ready-made schemes. Basal temperature in early pregnancy may vary. Here are some “atypical” pregnancy schedules. We took them from blogs of real women.

You can notice some features in these graphs.

Implantation retraction is not always noticeable.

During pregnancy, the basal temperature chart may have several similar “dips”. These are not real implantation retractions, but simply temperature jumps, an individual reaction to hormonal changes.
Sometimes the temperature rises not sharply, but gradually.
It happens that BT during pregnancy does not rise above 37.

Is it possible to determine pregnancy with a thermometer without a chart?

How to determine pregnancy using a thermometer if you have not previously measured BBT or built a graph? To do this, you need to measure BT in the last days of the cycle. This should be done in the morning, without getting out of bed. Prepare and shake off the thermometer in advance; it should lie nearby, but not under the pillow. Before this, at least 3 hours of continuous sleep must pass. It is better to measure in the anus or vagina. If your BT is above 37, there is a chance that you are pregnant.

However, this method can hardly be called accurate. Fever may indicate pregnancy, o hormonal imbalance, about inflammation or simply about your individual characteristics.
It’s easier and more reliable to wait for a delay and do a test. Or donate blood for hCG (in some cases, such an analysis will show pregnancy even before the delay).

Is it necessary to measure BT during pregnancy?

Rectal temperature during early pregnancy is considered one of the indicators proper development fetus Normally, starting from the fourth week of pregnancy, BT should be above 37 degrees without sharp jumps and changes. If your BBT drops sharply and you feel unusual heaviness and pain in the lower abdomen, this may indicate a threat of miscarriage.

However, most modern doctors do not determine the condition of the fetus by temperature, but prefer more current methods diagnostics (tests, ultrasound, etc.). After all, the BT method is still not reliable enough. It often becomes a cause for unnecessary worry. Therefore, you can ignore it with a clear conscience.

Consultation with a gynecologist

Obstetrician-gynecologist Elena Artemyeva answers patients’ questions.

— I am 8 weeks pregnant. The doctor advised me to measure BT every morning. At first it was 36.9-37.1. And then it jumped to 37.5. Is it dangerous?

— Basal temperature during pregnancy can reach 37.5 degrees and even 37.9. But in general, this is not a reliable enough method for assessing the condition of the fetus, it is not informative enough. You can with a clear conscience not measure your basal temperature, just quit this activity so as not to be nervous. Consult your doctor if anything bothers you (pain, discharge, severe toxicosis etc.) And be sure to do an ultrasound in the early stages.

— I think I’m pregnant, there’s a delay, the test showed two lines. My BT is 37.6. What temperature is considered normal?

- This is one of the normal signs pregnancy.

— I’m 5 weeks pregnant. My first pregnancy ended in miscarriage, so I’m very worried. Basal temperature 36.9. The doctor prescribed duphaston. But BT does not rise. What to do?

— Don’t panic and continue taking duphaston. It is not necessary to measure BT, it is better to donate blood for b-hCG 2-3 times a week - this is more informative method. Every two days the result should double.

— I’m 12 weeks pregnant, BT has always been 37.1-37.3. And suddenly it dropped to 36.9. Is it dangerous?

— This is a slight decrease, within the normal range. And in general, it’s time to stop measuring, for you this no longer makes any sense. You will have your first ultrasound soon, it will be much more informative.