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Basal temperature during ovulation

Ovulation detection is very important for pregnancy planning as well as for effective contraception. Basal temperature during ovulation is very specific and can help women to identify period of ovulation. Basal body temperature (BBT) is the lowest measurement of the body’s temperature when it is taken first thing in the morning after rest – it is actually the baseline body temperature. BBT measurement is easy and cheap. Regular (every day) measurement may help you to know when you are about to ovulate.

By taking and recording basal body temperature every morning over whole menstrual cycle, a pattern can often be seen. It was noted that only well organized and motivated women could benefit from BBT measurements. If you dream about pregnancy, your commitments will be rewarded.

Basal temperature during ovulation – how to start

First, you should choose the right thermometer. The digital thermometer is easier to read – preferably with measures in Celsius rather than Fahrenheit. Some specifically designed basal body temperature thermometers are also available. Each type of thermometer varies slightly in terms of accuracy – it is recommended to read official instructions before starting measurements.

Basal body temperature should be taken every morning after long good sleep (minimum 4-5 hours not interrupted) before eating, drinking or going to the bathroom and before any sexual activity. All mentioned activities could raise not only heart rate, but also baseline temperature. Thermometer should be placed under the tongue for few minutes. Sometimes thermometer can be placed in the vagina or in rectum.

Basal temperature during ovulation

Basal temperature during ovulation

Basal temperature rules include the following:

  • Baseline temperature should be taken every day in the morning at the same time (plus/minus 30 minutes);
  • Thermometer should be prepared in advance and placed next to the bed (easy reachable from sleeping position);
  • Temperature should be taken immediately after waking up before any movement (sitting up, getting out of bed, walking around, going to bathroom, sexual activities are forbidden);
  • Accurate baseline temperature can be measured only after good night sleep (minimum 4-5 hour without interruption);
  • During whole menstrual cycle only one (same) thermometer should be used.

Basal temperature during ovulation – when to start

Baseline temperature measurements start on first day of each menstrual cycle and continue during whole month (every morning throughout the entire cycle) until next menstrual period. Basal temperature registration tolls should be beside the bed (in easy reachable place). Every day temperature and measurement time should be fixed regularly.

Basal temperature during ovulation – charting

Basal temperature

Basal temperature

Correct basal temperature charting is crucial. Your chart should have two measurements – day of menstrual cycle and basal temperature. Fix baseline temperature every day according to cycle days. Connect all dots and you will see very specific pattern of degrees which reflect your ovulation patterns.

It is recommended to fix also every day activities including sex activities, late sleep, headaches, abdominal cramps, night parties, etc.

It is not so much the individual basal temperature measurement which is important but the specific pattern of change between the first and second phases of menstrual cycle. In normal healthy menstrual cycle, there is a lower temperature recording in the first part of the cycle (before ovulation) and higher basal temperature (after ovulation) during second part of menstrual cycle. Keeping records and interpreting the pattern of basal temperature rises and falls could help to identify the most fertile time frame.

Instead of charting yourself, you can use computer programs.

Basal temperature during ovulation – how to identify ovulation period

Basal body temperature chart can help to identify ovulation time – the overall pattern is most important. Basal temperature could rise and fall as menstrual cycle progresses, but biphasic pattern after ovulation should be visible – basal temperature before ovulation is usually lower than after ovulation. Usually ovulation occurs on the day the temperature dipped and the temperature after this day (ovulation day) is relatively higher than it was earlier in the cycle. If you notice few days (at least 3-4 days) increased (higher than average) temperatures in a row, you can most likely say that ovulation occurred on the day before the first high temperature.

Basal temperature during ovulation – how to get pregnant fast

Once you know your ovulation day, it is easy to schedule baby planning. During most fertile days of menstrual cycle, intercourse should be schedules for every couple of days (not every day!). Most effective is intercourse just before ovulation – it can provide conception success.

Having a break of two days of abstinence does help to boost sperm production, numbers and motility.

Check also basal temperature during pregnancy on next page.


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