Elevated Basal Body Temperature and Ovulation in Women

The basal body temperature is elevated?

Hello, doctor.
I would like to ask about my body temperature over the past two months.
I haven't experienced any significant low temperature phases, and my menstrual cycle has been between 36.85 and 37.00 degrees Celsius.
After my period, my temperature remains between 36.7 and 37 degrees Celsius until the next cycle, with one day during ovulation at 36.7 degrees.
Does this indicate that I am ovulating? Is it normal for my temperatures to be this high? Thank you for your response.

Yang Pei-Shan, 30~39 year old female. Ask Date: 2021/03/08

Dr. Zhang Kunmin reply Obstetrics and Gynecology

Hello, the method of measuring body temperature may not be accurate or there could be other reasons.
If you want to check for ovulation, it is recommended to consult a physician for an ultrasound evaluation, as it is more accurate.
Thank you! Wishing you peace and health, Dr.
Chang.

Reply Date: 2021/03/08

More Info

Understanding the relationship between basal body temperature (BBT) and ovulation is crucial for women who are tracking their fertility. Your observations regarding your BBT over the past two months indicate some interesting patterns that can provide insights into your ovulatory status.

Firstly, it is essential to understand that BBT typically exhibits a biphasic pattern during the menstrual cycle. This means that there are two distinct phases: the follicular phase (before ovulation) and the luteal phase (after ovulation). In the follicular phase, BBT is generally lower, while in the luteal phase, it rises due to the influence of progesterone, which is produced after ovulation. A significant rise in BBT, usually by at least 0.5°F (approximately 0.3°C), typically indicates that ovulation has occurred.

In your case, you mentioned that your BBT has been consistently between 36.85°C and 37.00°C during your menstrual period and remains around 36.7°C to 37°C after menstruation. The fact that you observed a temperature of 36.7°C during what you believe to be your ovulation day suggests that you may not have experienced a significant temperature rise that is typically associated with ovulation. A BBT of 36.7°C does not indicate a clear ovulatory peak, as ovulation usually results in a more pronounced increase in temperature.

Regarding whether your BBT is considered "normal," it is important to note that normal BBT can vary from woman to woman. However, consistently high temperatures, especially if they do not exhibit the expected biphasic pattern, may warrant further investigation. Elevated BBT can sometimes be influenced by various factors, including hormonal imbalances, stress, illness, or even lifestyle factors such as sleep quality and diet.

If you are concerned about your ovulation status, it may be beneficial to consult with a healthcare provider or a fertility specialist. They can perform tests to assess your hormone levels and overall reproductive health. Additionally, tracking other signs of ovulation, such as changes in cervical mucus or using ovulation predictor kits, can provide more clarity on your ovulatory status.

In summary, while your BBT readings indicate that you are experiencing elevated temperatures, the lack of a clear biphasic pattern may suggest that ovulation has not occurred as expected. It is advisable to monitor your BBT over a more extended period and consider consulting a healthcare professional for a comprehensive evaluation. Understanding your body’s signals is crucial for reproductive health, and seeking guidance can help you make informed decisions regarding your fertility journey.

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