Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn more about their health. Our providers may not see and/or treat all topics found herein.

Basal body temperature

The basal body temperature (BBT) is a person's at-rest temperature.

Natural cyclic changes in female hormones usually cause a woman's basal body temperature to go down slightly just before an egg is released (ovulation) and then go up sharply 24 hours after ovulation. By carefully measuring BBT every morning before getting out of bed and recording it on a chart, many women are able to estimate when they are ovulating. This helps pinpoint when a woman is most and least likely to become pregnant.

The change in your body temperature is very slight, so you need to use a special thermometer to measure it. You can use a regular digital thermometer, or you can buy a basal thermometer. A basal thermometer shows you the temperature in tenths of a degree. This allows you to note tiny changes in body heat.

Keeping track of basal body temperature may be helpful for women trying to get pregnant or trying to avoid pregnancy. It is one of several fertility awareness or natural family planning methods of birth control.

  • Having sex during the 5 days before and the day of ovulation increases your chances of becoming pregnant.
  • Avoiding sex up to and until several days after you have ovulated may help you prevent pregnancy, because the human egg is typically fertile for only 12 to 24 hours after ovulation.

Basal body temperature charting is done at home and is inexpensive. But to get an accurate record, a woman needs to track her temperature every day for several months. Women who work varying shifts or who have irregular menstrual cycles may have difficulty getting a useful basal body temperature measure.

Now Offering Pregnancy Massages

OB/GYN Associates of Lancaster, Inc. is pleased to offer pregnancy massages in our office! Massages are carried out with our certified massage therapist, Rachel. One hour sessions are available for $80. Call our office today to learn more

COVID-19 Updates

Do you ever feel at times due to life being so busy you put your health on hold? Now is the time to take care of you! For many of our patients we have postponed your annual exam by moving it out a few months in response to COVID-19, but we still want to make sure we have the opportunity to take care of you from afar. If you are our patient and have not had the opportunity for us to review your cancer family history with you, or maybe you have just put this on hold, here is the opportunity for you to fill out your information in a few quick steps online to see if testing is right for you! This questionnaire on your medical history will be posted to our website as well to access and to complete. So take control of your health today! We will be happy to direct you to right resources and follow up with you for any questions you may have.

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