It is useful for every girl who is planning a pregnancy to know how to keep a basal temperature (BT) chart. This is not difficult, but the process requires a lot of patience, because you will have to celebrate BT every day for at least two to three months. It is better to analyze the resulting graphs together with a gynecologist. However, with the help of this method and without a doctor, you can learn a lot about your health and ability to conceive. Our article, written together with an obstetrician-gynecologist, will help you with this.

Basal body temperature and body temperature are not the same thing. BBT is not measured under the armpit, but in the vagina, in the mouth, or (most often) in anus. This is not the temperature of the surface of the body, but the temperature internal organs. Basal temperature changes noticeably even with a slight change in the level of some female hormones.

Body temperature does not depend much on the day monthly cycle, but BT changes noticeably when the phases of the cycle change. That is why OB/GYNs and women themselves have been charting BT for decades to figure out how the reproductive system works.

The method was invented in the 50s of the 20th century in Great Britain. Professor Marshall discovered that the hormone progesterone (one of the main female hormones) reproductive system) can significantly affect the temperature female body. According to the basal temperature, fluctuations in the level of the hormone can be quite accurately determined. And since the amount of progesterone changes throughout the cycle, according to the BT schedule, you can understand at home how the ovaries work.

BT will even help to tell if conception has occurred. Of course, you will receive a clear answer to this question only after a delay with the help of special tests or analyses. But the graph will tell you that pregnancy is not excluded.

However, do not think that the “thermometer in the ass” is a mandatory item in the program of all women who want to get pregnant. Not at all. When planning a pregnancy, it is completely optional to measure the basal temperature. It is much more important to undergo at least a minimal medical examination by a gynecologist and a therapist - to be tested for infections, the level of basic sex hormones, general analysis blood, etc.

But there are situations when the method of measuring basal temperature will be really useful:

1. If you can not get pregnant for 6-12 months. If the "experience" is less, there is absolutely nothing to worry about yet. You just have to keep trying. If more - we can already talk about infertility, and you need to undergo a serious examination by a doctor. But in this time period, the schedule will help you navigate when ovulation occurs (and aim to “work” on future pregnancy these days). BT will also help you make sure that your reproductive system is working properly.
2. If you have been advised to measure BBT by a doctor. This method is not the main one in diagnostics, but how helper method it has been used successfully for a long time. For example, it will help your doctor find out if you are maturing. dominant follicle and whether there is ovulation. However, as a rule, the doctor asks the patient to supplement the BBT measurement with ovulation tests. And keep in mind that no doctor has the right to diagnose and prescribe treatment only on the basis of BT schedules! This is an additional research method, but nothing more;
3. If you are in a hurry to get pregnant and want to know exactly when your fertile days come.

Do you trust this method?

Let's be clear: many modern doctors consider this method obsolete. Even 10 years ago, BT scheduling was obligatory item examinations of patients who have difficulty conceiving.

Now a number of doctors have abandoned this study in favor of other - more accurate and less painstaking - methods. For example, (special ultrasound) and ovulation tests.

Indeed, in some situations, the BT schedule will be inaccurate and can be misleading:

• If you measure the temperature incorrectly;
• If you measure BBT for only one month. The only chart is not informative. It is necessary to carry out measurements at least three cycles in a row;
• If there is a chronic or acute illness(not necessarily related to gynecology);
• if you have hypo- or hyperthyroidism (thyroid disease);
• You are taking sedatives or hormonal medications

and in some other situations.

However, if done right, BT can still serve as a free yet valuable diagnostic tool.

Of course, you yourself should not make any diagnoses and take medications based on the BBT schedule. This is an inaccurate method, and self-treatment is unacceptable!

How to measure basal temperature correctly

There are three main ways to measure basal temperature:

• in the mouth (orally);
• in the vagina (vaginally);
• in the anus (rectally).

Each of them has its pros and cons, while the third method is considered the classic and most accurate. Refrain from experiments: if you start measuring in your mouth, continue until the end of the cycle. In the next cycle, if the measurement method seemed inconvenient, it can be changed.

You can measure the basal temperature with a conventional (mercury) thermometer, and electronic thermometer, but always high quality and accurate. After all, if you have, for example, a sore throat, then it does not of great importance What is your temperature - 38.6 or 38.9. But when measuring BT, every tenth of a degree carries a lot of meaning. The mercury thermometer is held for 6-7 minutes, the electronic one - until the signal plus 2-3 minutes, it will turn out more accurately. During one cycle, you should not change the thermometer. For reasons of hygiene, the thermometer must be wiped with alcohol after measurement.

BT is measured early in the morning immediately after waking up, without getting out of bed and not even moving (the thermometer must be shaken off in advance and put on the nightstand next to the bed, but not under the pillow). It is important that you get at least three hours of uninterrupted sleep before waking up (without going to the bathroom or fetching water).

The main rule for measuring basal temperature is to keep the thermometer lying down, in a relaxed state, almost half asleep, without moving. Record the result (put it on the chart) immediately - it is easy to forget.

If it was not possible to measure in the morning, it is pointless to do it in the afternoon. Indeed, during the day, the basal temperature is unstable, it jumps depending on emotional state, exercise, food, etc.

Why is the schedule falling apart?

Some conditions can affect your basal temperature and make the chart unreliable. Continue to measure BBT, but note the days when the following circumstances were in effect:

• ARVI or other viral, as well as bacterial diseases with a rise in temperature;
• taking certain medications, such as hormonal or sedatives. When you receive oral contraceptives ovulation is suppressed, so measuring BBT is generally pointless;
• injury, surgical interventions, including small ones (for example, your tooth was pulled out);
• stress, insomnia;
• alcohol intake;
• indigestion;
• moving, flight, especially with the change of time zones;
• sexual intercourse.

Analyzing the graph, you need to make an adjustment for these factors.

How to build a graph

To plot your basal temperature, click on this template and save it to your computer (and fill it out right there) or print it out.

Click to enlarge the template. Download it to your computer and fill it out right there. Or print and fill out by hand.

The numbers in the top column are the days menstrual cycle(not to be confused with the days of the month). Every day after measuring the temperature, put a dot in the appropriate column. To plot, at the end of the cycle, connect the points in sequence with a line.

After the chart is filled in, you need to draw an overlay line. To do this, you need to look at the temperature values ​​\u200b\u200bin days 6 to 12. A line is drawn above them. This line is service, it is needed only for clarity.

Below, on an empty field, you can make notes. For example, "from 12 to 15 dts - a tooth ached, the temperature rose." “Cycle day 18 is a lot of stress.”

What should be the normal basal temperature

Normally, the basal temperature changes throughout the cycle, and the graph is two-phase.

The duration of the cycle and the length of each phase for each woman is different, so we give approximate, indicative figures.

During menstruation, BT is usually 36.7-37 degrees. When the bleeding stops, the temperature drops slightly. In the first phase of the monthly cycle (from 1 to 10-15 days), a woman has a high level of estrogen and a low level of progesterone. Immediately after menstruation, the normal basal temperature is low. In a healthy woman, it rarely rises above 36.6.

Before ovulation, it may decrease slightly. And after ovulation, it rises to 37 and above. The difference between the phases is 0.4-0.8 degrees.

The basal body temperature can normally drop slightly before the most monthly ones. If this does not happen, this may indicate both individual characteristics and a possible pregnancy.

Here is an example of a basal temperature chart.

If your schedule is similar to the one in the picture, then most likely you are ovulating and your ovaries are working properly. If there are deviations, if there is no clear rise in temperature in the second phase of the cycle, this may indicate (although not necessarily) some hormonal problems.

How to determine ovulation according to the schedule

By how the basal temperature changes, you can calculate ovulation - that important point when the egg is released from the ovary and fertilization is possible. normal schedule basal temperature suggests quite sharp fluctuations. Before ovulation, BBT decreases slightly, and then, during ovulation, it rises quite sharply. On the chart, at least three points in a row must be above the overlapping line. The ovulation line is drawn vertically - it separates low temperatures from high.

If, for example, BBT was 36.5, and then the basal temperature was 37, then this means that ovulation has occurred. If you are planning to conceive, you should have sex two days before, during, and two days after ovulation.

But keep in mind that you should not use this information as a method of contraception. Method " dangerous days» is extremely unreliable. It gives a high percentage of spontaneous pregnancies. If you use contraception only on "dangerous days", be prepared to get pregnant within a year with a 10-40 percent chance (this variation is due to the fact that the risk was analyzed using different methods).

The unreliability of the "dangerous days" method is due to the fact that viable spermatozoa can "hold out" in the female genital tract for several days. And wait for the covulted egg. In addition, the method of measuring basal temperature cannot determine ovulation with 100% accuracy.

BT in various pathologies

Basal temperature can tell whether a woman is healthy and even help with a specific diagnosis.

We publish examples of basal temperature charts with decoding.

Anovulatory cycle

If the schedule is monotonous, if there is no rise in temperature in the second phase, we can talk about the absence of ovulation and that this cycle and. That is, the dominant follicle does not mature or matures, but for some reason does not burst. Accordingly, a mature egg does not come out, and there can be no conception in this cycle. Normally, every woman has from 2 to 6 anovulatory cycles per year (the older the woman, the more of them). But if such a picture is observed for several months in a row, this can be a source of problems with conception. You need to see a doctor.

Estrogen-progesterone deficiency

If there is a rise in temperature, but it is small (01-0.3 degrees), this may indicate insufficiency of the corpus luteum phase (estrogen-progesterone deficiency). In this situation, ovulation occurs, fertilization may even occur, but the level of hormones is insufficient to support the pregnancy. This condition is corrected with hormonal drugs (they should be prescribed by a doctor).

Short second phase

(after ovulation) is normally 12-16 days. If it is shorter than 10 days, this may indicate the insufficiency of the second phase. A covulted egg, even if it is fertilized, will not be able to penetrate the endometrium, and pregnancy will not occur. In this case, deciphering the basal temperature graph is not difficult: pregnancy is problematic. Contact your doctor.

The duration of the first phase is not so important: it depends on the individual characteristics of the woman and has little effect on the ability to conceive.

Estrogen deficiency

If in the first phase BBT is high (36.7-37 degrees), this may mean that you do not have enough estrogens - important female hormones. If this condition is confirmed by tests, then it must be corrected with special medications.

Inflammation

Also, a high temperature in the first phase can be triggered by inflammation of the appendages or other gynecological inflammatory diseases.

Signs of an inflammatory disease

Attention: these graphs can only suggest the presence of problems! This is not a diagnosis and not a reason to take medication.

What deviations should be reported to the doctor

monotonous graphs, when the temperature is above or below 37 throughout the entire cycle, while the temperature drops are less than 0.4 degrees;

• too short monthly cycle (21 days or less);
• too long monthly cycle (more than 36 days);
• if there is no clear ovulation on the chart, and such a picture is observed for several cycles in a row;
• if during the cycle there are sharp unsystematic jumps in BT. However, this state can be explained by various external and internal factors that affect temperature (alcohol intake, stress, somatic diseases etc.);
• if the schedule is normal, but the desired pregnancy does not occur within 12 months.

BT during pregnancy

If at the very end of the cycle the temperature does not decrease, but remains high (37 degrees and above), there is a chance that you are pregnant. Normally, it will stay at the level of 37-37.5 for the entire first trimester. A sharp decrease may be accidental, or it may mean complications during pregnancy. You should not panic, but it is better to contact your gynecologist.

Basal body temperature during pregnancy early dates before the delay, it can tell the moment of fertilization, attachment of the embryo, as well as identify problems and pathologies, such as an ectopic or missed pregnancy. Consider the features this method observations of the body and standards for each stage.

Schedule Rules

The basal schedule is compiled by a woman independently based on observations of temperature indicators. To do this, you need to take a piece of paper, preferably in a box, and draw two coordinate axes. On the vertical, put down the temperature indicators, preferably with a minimum step of 0.1 ° C, on the vertical - days. Every day you need to take measurements. Mark them as points on the graph at the corresponding intersection. All points must be connected to form a graph.

The temperature is called basal, which means the lowest temperature that the body reaches during rest. Therefore, it is recommended to take measurements in the morning without using physical activity without even getting out of bed after sleep.

Measurements can be taken in the mouth, in the vagina or rectally. It is the latter option that is most preferable, because. considered more reliable. But having chosen one of them, it is no longer necessary to replace it in another way.

Rules for measuring basal temperature during early pregnancy

In doing so, you must comply simple rules:

• In the evening, prepare a thermometer so that in the morning you don’t even “shake” it, i.e. prevent any physical action.
• Use one thermometer to eliminate error;
• The measurement time should be the same daily;
• Taking alcohol medicines, disease state, flight, stress, sexual intercourse should be recorded on the graph in the form of notes, because can affect temperature changes.

To fully focus on the readings of the graph, you need to conduct observations from 3 cycles. When comparing the temperatures of different months, you can see which parameters are normal for a particular organism on different stages. The temperature depends on the balance and values ​​​​of hormones, and each of them is produced in different sizes.

What is the basal temperature during pregnancy in the early stages before the delay

More often, a woman leads a basal chart to identify the day of ovulation, but some other conditions can be observed from it and even a number of pathologies can be diagnosed.

Standard temperature indicators at different phases of the cycle

The cycle is divided by ovulation into two phases, each of which has different temperature indicators that occur due to the influence of certain hormones at this moment. The following conditions and standards are observed:

1. Follicular. There is a maturation of the liquid bubble in which the egg is formed. At this time, the level of estrogen produced by the ovaries rises. The temperature is below 37°C, averaging 36.2-36.7°C.
2. Before ovulation, there is a sharp drop: by 0.4-0.5 ° C. At the moment of rupture of the follicle, luteinizing hormone is released, which is displayed as a sharp increase in temperature: by 0.4-0.6 ° C.
3. The second phase is accompanied by the function of a temporary body formed at the site of rupture of the ovary. It produces progesterone and maintains a balance of hormones that is optimal for fertilization, conception and pregnancy in general. The temperature during this period is slightly above 37°C or at this mark (up to 37.5°C). If conception occurs, the indicator remains at this level until delivery.
4. Before menstruation, the amount of progesterone decreases, because. there is no need for it due to the lack of fruit. In this regard, the temperature also decreases - by 0.3-0.5 ° C.

There are main phases: follicular for the formation of an egg and luteal for fixing conception.

Thus, a sharp jump (at first a drop, after a peak) indicates the moment of ovulation. If fertilization has occurred, the basal temperature during early pregnancy before the delay in the schedule will testify to what happened. As we know, the fertilized egg (fertilized cell) moves to attach to the uterus. This journey takes about 7 days. This means that 7-10 days after ovulation (conception), you can notice a slight drop in the chart - literally by a couple of tenths of a degree. This confirms the implantation of the embryo.

It can be quite difficult to notice implantation recession. For some ladies, it is not even displayed on the chart. But the absence of a decrease in the curve a few days before menstruation is the first sign of pregnancy, i.e. allows you to diagnose it even before the delay.

Confirmation of pregnancy at an early stage - methods

To verify your position, you need to check the presence additional symptoms. But they often appear after the "critical" days that did not come in a timely manner.

Symptoms and physical abnormalities

These include:

• Nausea, sometimes vomiting;
• Aversion to food, smells;
• Soreness, "swelling" of the chest;
• Mood changes, irritability;
• Sleep disturbance, drowsiness.

It is also recommended to conduct a home test to identify the condition. But it is worth remembering that only highly sensitive drugs are able to show results at such an early date. Recall that the reagent with which the strip is impregnated reveals the amount of hCG. The hormone is produced by the outer shell of the fetus and grows very quickly - twice every day. Therefore, the longer you wait, the clearer the result will be.

HCG level

Any tests show an increased hCG on the 5th-7th day of delay, when its level already rises significantly. If the test is still negative, and all the signs are on the face, you should wait a few more days and do the test again. If the test showed a positive response, then the implantation occurred on the eve of the expected menstruation due to late ovulation.

If in such a situation there are brown discharge, pulls the lower back, tormented by pain in the abdomen, you need to see a doctor. An ectopic pregnancy is quite likely, which threatens the health, and sometimes the life of the mother. The test continues to show a negative answer, because the fetus is not attached to the uterus and cannot produce hCG.

Schedule deviations - possible options

After pregnancy is confirmed by a doctor, which may be done with an ultrasound or blood test, sometimes a woman is advised to continue monitoring for pregnancy. basal chart. This is true for those who have experienced miscarriage, missed pregnancy and other pathologies. The schedule will be able to diagnose the deviation in a timely manner, and sometimes take measures to save the fetus.

Decrease in basal body temperature during pregnancy

The following temperature deviations are possible:

• Temperature increase, approaching or exceeding 38.0 ° C, speaks more often about inflammatory process. You need to visit a doctor and find the cause. If the increase occurred once, it may be a reaction to stress or another external factor. In this case, you should not worry.
• Temperature drop below 37.0 ° C indicates a decrease in progesterone. As we remember, this hormone is responsible for proper development fetus. Its decrease indicates a pathology, a possible failure or missed pregnancy. You need to urgently seek help. Timely intake of progesterone often helps to save the fetus, so you can not hesitate. If the sinking happened once, you can take this as an error in measurement or external influence. But with a constant decline, the visit should not be postponed.

Often there are deviations that the graph does not show, and therefore it is important to listen to your feelings. Any discomfort, pain in the abdomen, and even more so the appearance of bleeding or just discharge should be alarming and require urgent medical attention.

Falling temperatures below 36.9 ° C should already alert. And if the indicator drops to 36.0 ° C or lower, this is very alarm signal. Pregnancy cannot proceed normally at this temperature.

What affects the schedule change

Thus, the basal temperature during pregnancy in the early stages of 37.0-37.5 ° C is the norm. If a deviation is detected, it is worth waiting another day and checking the indicator again. It is not worth measuring the temperature during the day, it varies, and significantly, which can be misleading. If a non-standard indicator appeared once and then returned to normal, you should not panic, because it is influenced by many factors:

• Physical exercise. With active sports or excessive loads the day before, a non-standard result on the graph is possible.
• Measuring the temperature in a sitting position or after getting up will not give an up-to-date answer, because. blood circulation to the pelvic organs increases.
• Poor or short sleep. If the woman rested less than 4-6 hours, the result will be false.
• After intercourse, more than 12 hours must pass before the measurement.
• Infectious or colds.
• Taking certain medications.
• Stress causes changes in endocrine system and disrupt the balance of hormones, which is reflected in the graph.

conclusions

In the process of measuring basal temperature during pregnancy in the early stages before the delay, the schedule is an actual way to identify a favorable moment for conception. With it, you can diagnose pregnancy, even before the onset of a delay. Also, temperature changes can indicate some deviations and threats. But it makes no sense to keep a schedule for the entire pregnancy, because. the hormonal background of a woman changes, and the results will not show her anything. The observation is relevant only in the first few weeks in order to timely notice a possible failure.

Most women have heard about such a concept as "basal temperature" more than once, but few understand what this means. medical term why it is necessary to control this indicator and how to decipher the BT schedule for a pregnant and non-pregnant woman. We'll help you figure it out.

Basal temperature - what is it?

The basal body temperature is minimum score, which is observed after long sleep and rest. Various processes in a woman's body increase BT indicators, it is thanks to this feature that changes can be determined hormonal background during Deviations in indicators are a signal of certain violations in the work of systems and organs. For example, pregnant women are often monitored. BBT charts with a low temperature in phase 2 may indicate a threatened miscarriage. And similar indicators in a non-pregnant woman indicate infertility.

Why determine basal temperature?

Analyzing changes in BT, the following pathologies are determined:

1. The presence or absence of ovulation.
2. The information obtained can be used both for pregnancy planning and for the calendar method of contraception.
3. Cycle disorders. In case of deviation from the norm, the doctor may suspect some diseases of the reproductive system, such as the presence of an inflammatory process or insufficiency of the luteinizing phase, as well as hormonal disorders.
4. With the help of BBT indicators, you can find out about pregnancy at an early stage. The BT schedule for a pregnant woman has its own characteristics, which are described in more detail below.

How to measure BT?

How to measure basal body temperature? To do this, stock up on a separate thermometer, preferably mercury. BBT is measured in the mouth, vaginally and rectally. The latter method is considered the most preferable, since the results of such measurements are the most reliable due to the minimal influence of external factors. V armpit do not measure BT. It is necessary to choose only one method, without changing it throughout the entire diagnostic period, which is at least 3 months. Measurements should be taken in the morning, after at least 6 hours of sleep, without getting out of bed, preferably at the same time.

Observe changes in the basal temperature of women with menstrual irregularities, pregnant women. BT schedules for planning girls will become indispensable helpers in determining auspicious days

You need to start recording BBT indicators on the first day of menstruation (the beginning of the cycle) in order to get complete information for monthly period. Women who are pregnant should schedule BT regularly throughout the first trimester.

It is recommended to record the results immediately after the measurement, as an error can affect the diagnosis and interpretation of the indicators. In addition to indicating the temperature itself, it is necessary to indicate the day of the cycle, the number of days of menstruation. It is extremely important to note additional factors that may affect the measurement results: reception medicines, lack of sleep, diseases, stress, physical activity, sexual intercourse on the eve of measurements, the use of spicy foods and alcohol. The schedule of BT of a pregnant woman, in addition to the above factors, should reflect the well-being and feelings of a woman.

Keeping BT records

You can write data in a notepad, but it is more convenient to use online applications or computer programs for fixing and analyzing measurements of basal body temperature. This will decipher the BT schedule for a pregnant and non-pregnant woman: determine ovulation, calculate the average temperature of each phase of the cycle, highlight deviations from the norm, and give recommendations. But do not forget that the resulting software decoding is only preliminary generalized data that cannot be a diagnosis and a guide to self-treatment. The recorded results must be shown to the attending gynecologist. Special attention the results obtained should be given to pregnant women. BBT charts with a low temperature should be shown to the attending physician.

Change in BBT throughout the menstrual cycle

In order to understand the principle on which the diagnostic method using basal temperature is based, it is important to understand what processes in a woman's body are associated with changes in temperature indicators.

The monthly menstrual cycle in medicine is usually divided into 4 phases:

1. Menstrual - starts from the first day menstrual flow. This day is also considered the first day of a woman's monthly cycle. During this period, the body rejects the endometrium and prepares for hormonal level to the development of a new egg. This phase lasts up to 7 days. BBT during this period should normally correspond to 36.2-36.6 degrees.
2. This is followed by the follicular phase. During this period, the body intensively produces which promotes the development of follicles, and subsequently - the egg. This period of the menstrual cycle lasts up to two weeks. The basal temperature in the follicular phase rises slightly and is normally 36.7-36.9 degrees. In a day or two, there is a pre-ovulatory temperature drop - up to 36.3 degrees.
3. The ovulatory phase lasts about 3 days. This period is characterized by a decrease in the production of follicle-stimulating hormone and an increase in the level of luteinizing hormone. Thanks to the latter, the egg is released from the follicle - this process is called ovulation. This is the most auspicious time to conceive a baby. The basal temperature during the period of ovulation rises and reaches up to 37.7-37.9 degrees.
4. The last phase, luteinizing, is characterized by the intensive production of progesterone to maintain pregnancy in the event of its occurrence. The basal temperature in this phase remains above 37 degrees. In the absence of fertilization of the egg, the temperature indicators drop sharply 1-2 days before the expected menstruation and amount to 36.6-36.8 degrees. After that, a new cycle begins.

The BBT schedule of a pregnant woman (after conception) should normally look like a monotonous straight line with BBT values ​​above 37 ° C.

Norms of BT indicators

With basal temperature indicators that correspond to the established norms, at the end of the monthly cycle, the curve of the resulting graph will have a clearly defined two-phase separation. So, in the first half of the cycle, the line will pass below 36.8. A few days before ovulation, a preovulatory decrease in temperature will be noted, after which - sharp rise indicators by at least 0.4 degrees. The jump is separated by a red line - this is the day of ovulation. After that, the elevated temperature lasts up to 14 days, then a premenstrual drop in the indicator is recorded.

BT during pregnancy: normal

If within 16 days after ovulation the thermometer shows more than 37 degrees, this may indicate pregnancy. If conception has occurred, the egg is attached to the wall of the uterus. Progesterone and the "pregnancy hormone" - hCG - begin to be produced. When women are pregnant, BBT charts show a temperature of 37-37.6 o C. In 25% of cases, in the early stages of embryo development, an increase in indicators to 38 o is observed. In addition, with normal production of progesterone, there will be no premenstrual decline in basal temperature.

When conception is confirmed, doctors recommend continuing the schedule throughout the first trimester. It is especially important to keep a schedule of BT for a pregnant woman who has had miscarriages or a fading of the embryo at an early stage in history. For more later dates such a procedure is uninformative due to changes in hormonal levels.

On sites for expectant mothers, forums, you can view the so-called "pregnant" BT charts. Photo showing normal performance throughout the menstrual cycle, accompanied by conception, is presented below.

Implantation retraction - what is it?

Often there are "pregnant" BT charts with implantation retraction - sharp decline temperature approximately 5-7 days after ovulation. The next day, the indicators return to a level above 37 degrees. Such a temperature change is observed during the period when the fertilized egg is attached to the wall of the uterus. Fixing on the chart is considered a sign of pregnancy. Besides jump temperature, sometimes there may be slight spotting discharge from the genitals and pulling sensations in the lower abdomen. But if at the same time with such symptoms a woman observes “pregnant” charts with low BBT, this is a serious reason for an urgent appeal for medical care- possible risk of miscarriage.

BT during pregnancy: deviations

Deviations from the established norms of basal temperature indicators often indicate various violations, sometimes about dangerous states pregnant woman and baby. If you followed all the measurement rules, and the thermometer records readings below 37 or above 38 degrees, an urgent consultation with a specialist is necessary. You need to pay attention to the state of health in the following situations:

1. In previous cycles, the basal temperature in the post-ovulation period was 37-37.3 o C, and during pregnancy it jumped sharply to 38. Such a change in indicators may indicate the presence of various kinds of inflammatory processes in the body. Requires a series of tests and diagnostic procedures to make a correct diagnosis. But if even before pregnancy the temperature in the second half of the cycle was close to 38, there is no cause for concern, in this case high performance bt are individual characteristics organism.
2. "Pregnant" BT schedules with low temperature in phase 2 require urgent medical attention. Indicators below 37 degrees indicate a lack of progesterone - this is extremely dangerous during pregnancy. A decrease in hormone levels can threaten spontaneous abortion (miscarriage). With early diagnosis pathological condition it is possible to normalize the level of progesterone by taking synthetic drugs. In this case, there is a high probability of preservation and further normal development pregnancy. Another reason for a decrease in temperature can be a frozen pregnancy. Unfortunately, in this case, it is not possible to save the fetus. Such a diagnosis must be confirmed by ultrasound diagnostics. If pregnancy is confirmed, the doctor will prescribe curettage of the uterine cavity for medical reasons.

Norm and deviations of the basal temperature curve

We discussed above what the normal BT indicators should be in a certain period of the menstrual cycle. Now let's figure out what types of graphs are there that indicate deviations in health status:

1. If in the second half of the cycle the basal temperature rises only slightly (up to 0.3 degrees) and such curves are recorded for several cycles in a row, the doctor may suspect a hormonal imbalance: a lack of progesterone is possible. Such deviations lead to the absence of ovulation and, consequently, to infertility.
2. In most cases, women face problems in carrying a child, whose basal temperature rises only a few days before menstruation, and the duration of the second half of the cycle is 10 days or less. In addition, there is no decrease in temperature before the onset of menstruation. In such a situation, doctors talk about the insufficiency of the second phase of the cycle, the threat of miscarriage. Timely detection of pathology is corrected by medication.
3. The graph curve, which does not have a pronounced decrease and increase in temperature, and according to the results of the indicators, it is not possible to divide the cycle into separate phases, indicates the absence of ovulation. This cycle is called anovulatory. During the year, a woman can normally have 1 cycle without ovulation. But if such a schedule is fixed for three months or more, you need to contact a gynecologist for an examination. With such indicators of basal temperature, pregnancy is impossible. An example of such a graph is shown below.
4. The zigzag, chaotic curve of the basal temperature graph indicates a lack of estrogen in the woman's body. This leads to a lack of development of follicles, and subsequently the egg. And as a result - anovulation and infertility. Be sure to seek the advice of a specialist when fixing these types of schedules for more than three cycles in a row.

Measurement of basal temperature is an effective and affordable home diagnostic method various pathologies in a woman's body. The schedule of BT for a pregnant woman is extremely important - timely identification of the problem can save the life of the unborn baby and mother. But do not self-medicate - in case of temperature deviations from the norm, consult a gynecologist for advice.

• Normally, 2-4 days before the onset of menstruation, BT begins to decrease and reaches 37.0-37.1 by the 1st day of the cycle. Then, during normal menstruation BBT continues to decline, despite the amount of blood released.
• If a woman has a hidden current inflammation of the uterine mucosa (endometritis) or the uterus itself (endomyometritis), then during menstruation, BT will go UP, sometimes reaching 37.5-37.6 with normal temperature in the armpit.
• The rise in BBT in the last 1-2 days of menstruation (if it lasts at least 4-5 days) may indicate inflammation of the tubes or (much less often) the cervix - without affecting the uterus itself.
• A sharp rise in BBT for one day during menstruation does not mean anything: inflammation cannot start and end so quickly.

Is it necessary to measure BBT during menstruation?

BBT measurements can be started both from the 1st day of the menstrual cycle, and on the day the discharge stops (a matter of your convenience).

What should be the BT in the first phase?

• Normally, the temperature of the first phase is kept within 36.5-36.8.
• But often on the charts, estrogen deficiency is visible, which is expressed high level BT in 1 phase. In such cases, doctors prescribe estrogens, such as Microfollin. But only if these suspicions are confirmed hormonal analysis blood.
• Another unusual phase 1 schedule occurs in the presence of inflammation of the appendages. After an exacerbation during menstruation, the inflammation may subside, but from time to time give a small, purely local exacerbation, which is reflected in the basal temperature. BBT can rise to 37.0-37.2 for 1-2 days, and then decrease again.

What could be the reason for unexpected temperature rises in the first phase?

Stress, travel, alcohol intake, colds with fever, sex in the evening (and even more so in the morning), measuring BBT at an unusual time, late going to bed (for example, went to bed at 3 o'clock, and measured at 6 o'clock), sleepless night and much more affect BT. Eliminate the "unusual" temperature by connecting with a dotted line normal readings. Try to establish and note in the graph the possible cause of the deviation.

What should be the BT in the second phase?

• Normally, the temperature of the second phase rises to 37.2-37.3. But more important is the difference in average temperatures (read below).
• A low temperature in the second phase (relative to the first) may indicate insufficient function of the corpus luteum (progesterone). To support the second phase (and pregnancy) prescribe additional reception progesterone (most often - Utrozhestan or Duphaston) - but only if these suspicions were confirmed by a hormonal blood test.
• Approximately 2-4 days before the onset of menstruation, BT begins to decrease and by the 1st day of the cycle reaches 37.0-37.1.
• If BT rose to usual terms, but then does not fall before menstruation, stays above 37.0 throughout almost the entire menstruation, and decreases in last days or after the end of menstruation, then it is suspicious of a pregnancy that aborted during the days of menstruation.
• If BBT in the second phase is kept low (36.9-37.0), and by the time of menstruation it begins to rise and stays above 37.0 throughout menstruation, then, most likely, we are talking about inflammation of the appendages.

If the temperature of the second phase is not high enough (there is no difference of 0.4 degrees), does this mean that I have a deficiency in the second phase?

Perhaps, but not necessarily. BT does not provide any information about the usefulness of the function of the corpus luteum - neither about the length of the phase (the temperature can rise even a few days after ovulation), nor about the level of progesterone produced by the corpus luteum (the thermometer readings do not allow determining quantitative level progesterone in the blood - to assess the level of progesterone, you need to take a blood test a week after ovulation).

On what day relative to the rise in temperature does ovulation occur?

Before ovulation, the temperature drops, and after it, it rises. A rise in basal temperature means that ovulation has already occurred.

A drop in temperature at the time of ovulation occurs only in a very small number of women. Insofar as sharp drop temperature is extremely rare, this sign cannot be absolutely reliable in determining the ability to conceive, therefore, to determine the approach of ovulation, it is better to use the other two signs.

If the schedule does not show ovulation, does this mean that it was not there or do I have problems with hormones?

The BT measurement method is very unreliable! In no case should it be relied upon in diagnosing any violations or in prescribing hormonal drugs! In cases where there is no obvious second phase on the graphs, it is necessary to carry out ultrasound monitoring, and in the presence of ovulation by ultrasound, take a blood test for progesterone a week after ovulation, if the results of both studies are normal, such graphs can be considered a "feature" of the body and stop measuring temperature, if it is not indicative;

Is there more than one ovulation per cycle?

Cases where two (or more) eggs are released from the ovaries during one cycle constitute a very small percentage of total number ovulation. However, this output always occurs within 24 hours. Multiovulation leads to the birth of twins.

If the schedule is perfect, does this mean that there was an ovulation? Does this mean that you can accurately guess the day of ovulation?

The method does not provide accurate information about the presence of full-fledged ovulation even in the presence of two-phase schedules (for example, in the case of premature luteinization of the follicle), as well as accurate information about the timing of ovulation that has occurred (the temperature may rise the next day, and a few days after ovulation - this is in normal range),

What should be the temperature difference between the first and second phases?

• The difference between the average BBT of the second phase and the average BBT of the first phase should be at least 0.4-0.5. Except in cases where a small temperature difference is only a feature of the woman's body, and not an indicator of the presence of any disorders. This is usually checked additional methods examinations - ultrasound, blood test for hormones, etc.
• If throughout the cycle the temperature on the graph is kept approximately at the same level or the graph looks like a “fence” (low temperatures constantly alternate with high ones), and not two-phase, then this means that in this cycle there was most likely no ovulation - anovulation. To confirm this fact, it is necessary to conduct ultrasound monitoring for several cycles to determine the presence or absence of ovulation. At healthy women several anovulatory cycles per year are allowed, but if such a picture is observed in all cycles, you need to consult a doctor. At total absence ovulation, a woman does not have full menstruation - only "menstrual-like bleeding" (which can be either regular or irregular).

How many days should the ascent be?

Normally, the rise takes no more than 3 days. A more gentle rise reflects a lack of estrogen and weakness, inferiority of the egg. Fertilization in a cycle when BBT is high in the first phase, and the rise takes more than 3 days is very problematic.

What is the duration of the phases and why is the cycle always different?

The first phase (prior to ovulation) can be very variable in duration, as in different women, and the same one. Usually, the length of this particular phase of a woman's cycle affects the delay in menstruation - for example, if the maturation of the follicle is slower or does not occur at all. The second phase (after ovulation) is not the same for different women (from 12 to 16 days), but is almost constant for the same one (plus or minus 1-2 days).

• The lengthening of the first phase of the cycle is not a typical phenomenon, but this does not affect the normality of the cycle. A cycle with an extended first phase is normal.
• If the second phase is shorter than 12 days, then this is a sign of insufficiency of the second phase, low level progesterone.

What BT indicates the onset of pregnancy?

• If there is no menstruation, and BT is kept within the second phase for more than 18 days, this indicates a possible pregnancy.
• You can be sure of pregnancy if the level high temperatures lasts 3 days more than your normal phase corpus luteum. For example, if it is usually 12 days (maximum 13), but once it lasts 16 days, then almost
• If a third level of temperature appears during a normal two-level cycle, then you are almost certainly pregnant. This third level of temperature occurs due to the additional progesterone in the body of a pregnant woman. Unfortunately, however, not all women have such a three-level schedule.
• If menstruation is scanty or unusual, and BT is kept on elevated level- possible pregnancy against the background of the threat of interruption.
• If BBT rises at the usual time, but then does not fall before menstruation, stays above 37.0 for almost the entire menstruation, and decreases in the last days or after the end of menstruation, then this is suspicious of a pregnancy that aborted during the days of menstruation.

When does implantation take place and how does BT behave at this time?

Implantation of the fetal egg occurs on the 6-8th day. It happens that at this time the temperature drops by 1, a maximum of 2 days. When you see a drop in temperature in the middle of the luteinization phase on your graph, this does not mean that you are pregnant. Moreover, such a picture is not required during pregnancy.

Is it necessary to measure BBT while taking OK or other hormonal drugs?

BBT should not be measured while taking OK - under the influence of the hormones taken, it will not be indicative.

After fertilization, all organs and systems of the female body undergo serious changes. Physiological transformations are felt already at the initial stage of pregnancy. key indicator the state of health of the girl at this time is the basal temperature, changes in which may indicate pathologies or abnormalities.

What is basal body temperature

This is an indicator of temperature in conditions of maximum rest of the body. BBT is measured during pregnancy rectally and depends on the hormone progesterone secreted by the female genital organs, the volume of which often changes during the monthly cycle. By determining the basal temperature, you can find out the time of the beginning and end of ovulation (for planning fertilization), as well as detect the onset of pregnancy. BT allows you to find out if there are inflammations or other pathological processes in the female body.

The norm of BT after conception

In order for a fertilized egg to attach to the uterine wall, certain conditions are necessary. The female body creates a favorable environment for this with the help of progesterone, which is produced in increased volumes during ovulation. With the help of the hormone, the uterus becomes able to accept a fertilized egg and allow the placenta to develop. This explains the increase in BBT in early pregnancy. As a rule, the value of the thermometer shows 37-37.3 ° C.

If the basal temperature in the early stages of pregnancy remains within the specified limits, this indicates that the development of the fetus is normal, without complications. In some women, the indicator may deviate up to 38 degrees, which is due to the individual characteristics of the body, however, to make sure that there are no diseases, you should visit a doctor.

Body temperature during early pregnancy should be measured every morning at the same time. This is the only way to be sure of the accuracy of the indicators: no external factors have not yet had an effect on the body. After eating, physical exertion (even minimal), experiencing various emotions, the basal temperature undergoes changes. Throughout the day, BT is constantly changing under the influence of these factors, so it is pointless to measure it during the day or in the evening.

Causes of deviation from the norm

Doctors diagnose high basal temperature in early pregnancy and in some other cases. The indicator, for example, can increase with an inflammatory process in the female genitourinary system. To verify the onset of pregnancy, it is necessary to track the duration of the delay in menstruation and conduct a test. After confirmation of fertilization, the doctor advises the girl to periodically monitor BBT so that, if available, pathological processes eliminate them in time.

High basal temperature in pregnant women sometimes indicates the presence of inflammation in the organs of the reproductive system. Sometimes BBT rises during an ectopic pregnancy: despite the abnormal location of the egg, it develops, causing increased production of progesterone by the body. Signs of deviations in elevated temperature are pain with localization in the lower part of the peritoneum and brownish vaginal discharge.

Possible cause elevated BBT in early pregnancy is an imbalance of hormones that is associated with estrogen secretion. Deficiency of this hormone in the female body can lead to abortion and infertility. A lower basal temperature (below 36.9 ° C) with its subsequent increase also indicates possible pathologies. Low rate BT can talk about inflammation of the uterine endometrium.

How to measure basal temperature to determine pregnancy

At early dates and after BT, the sutra is measured before getting out of bed, when female body is in the minimum activity mode. In this case, the thermometer is immersed 2 cm inside the anus or vagina and held there for 3-5 minutes. Procedure rules:

• one thermometer cannot be inserted into different holes to avoid infection of the perineum;
• better use mercury thermometer, insofar as electronic devices do not show accurate results;
• measurement should be taken at about the same time every day;
• carry out the procedure while lying on your back or stomach (before that, it is forbidden to get up, as blood flow to the peritoneum and small pelvis increases);
• it is allowed to measure basal temperature in early pregnancy after at least five hours of sleep;
• during the control of BT, one should not have sexual intimacy (the period between the act and the time when the temperature can be determined should be at least 12 hours);
• it is forbidden to take any drugs;
• do not have breakfast before measuring BBT;
• The procedure can only be carried out healthy condition(even a slight runny nose can affect the value of the thermometer);
• the minimum duration of BBT tracking is 3-4 cycles (more short term does not allow the doctor to draw conclusions about the health of the patient).

BT Record Table Compilation Guide

The basal temperature during early pregnancy helps to timely track the changes taking place in the body. For convenience, women create a special schedule where they enter data on BT. At the same time, the date of temperature measurement, the day of the monthly cycle, the thermometer readings and notes are indicated. The last column may contain factors that could affect BT ( intestinal disorders, stress, bad dream, etc.).

How to make a table for recording BT:

• draw two axes (X and Y) on a piece of paper in a cell, while the first one will indicate the day of the cycle, and the second - the BT indicator;
• plot the measurement data and connect the points to form a curved line;
• draw an overlapping line over the six BBT values ​​in the initial phase of the menstrual cycle preceding ovulation (the first five days of the cycle and days with a controversial BBT indicator are not taken into account);
• on the compiled temperature curve, two days after ovulation, draw the corresponding line, highlighting it in a different color.

How to decipher the basal temperature chart during pregnancy

The BT scheme conditionally divides the cycle into 2 parts. The first phase is the part of the schedule before the ovulation mark, the second phase is after it and lasts longer. How long can it last? The best option according to doctors - 2 weeks, but the period from 12 to 16 days is also considered the norm. The duration of the menstrual cycle in different representatives of the weaker sex varies and depends on the duration initial phase.

If, in the case of regular measurement of BBT indicators during the first trimester of pregnancy and longer, you notice that the duration of the second phase is less than 10 days, there is a good reason to see a doctor. In addition, it is worth taking into account the difference in the average temperature values ​​during both phases. The basal temperature in early pregnancy should normally differ in the first and second parts of the menstrual cycle by no more than 0.4 ° C. A different difference indicates the presence hormonal imbalance.

Video: what should be the rectal temperature during pregnancy