Basal Body Temperature (BBT) Information

Can You Detect Pregnancy by BBT Changes?
Yes. If your BBT remains elevated even past the time that your menstrual period is due, it could be a very early indicator of pregnancy. When you conceive, the egg is fertilized in the fallopian tube, after which it takes about a week to travel to the uterus, where it will implant. It is at this time that your body is finally able to detect that you are pregnant. When hCG is released, women often experience a third temperature rise, not as dramatic as the first, but can usually be seen anywhere from about a week to 12 days after the first temperature rise.

Can Falling BBT Predict a Miscarriage?
Waking temperatures are very useful if you continue to take them during the first trimester. Most miscarriages occur during this time and waking temperatures typically start dropping below the coverline as a warning of an impending miscarriage. You can usually tell that you have had a miscarriage, even if your pregnancy was never confirmed by a pregnancy test. You may have had 18 or more high temperatures, followed by what appears to be either a normal or heavier period.

Trying to Conceive? Find Out How to Get Pregnant Faster with the iVillage Fertility Planner

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