My Temp Rise Does Not Last
Question
I am not married yet, but engaged, and have been studying an NFP book. I began charting temperatures about eight months ago. There is something, however, that I am concerned about. The thermal shift is supposed to last at least three days to be considered an actual thermal shift (when the temp rises) in Phase III. But in my case, what usually happens is the temperature will rise high for one day, and then drop back down the next day—it is then that my period starts. Why do I not maintain my high temperatures for long? Does this mean I am not ovulating. I have not begun using the mucus method, so I realize my results are harder to interpret, but if you have heard of this case before, you may know what it means. Thanks for your help!
Katie
Answer
Last Updated: November 17, 2021
Dear Katie,
The absence of a sustained thermal shift would indicate an anovulatory cycle. However, without more detailed information on your actual temperatures, and most importantly, other signs that offer critical cross-checks, such as your mucus signs, duration of bleeding, recent cycle length history, it isn’t possible to say precisely what is happening. We would suggest you begin mucus observations and contact a STM teacher directly, and together you will be able to make a more accurate determination.
Andrea and Ron Gronsky
The absence of a sustained thermal shift would indicate an anovulatory cycle. However, without more detailed information on your actual temperatures, and most importantly, other signs that offer critical cross-checks, such as your mucus signs, duration of bleeding, recent cycle length history, it isn’t possible to say precisely what is happening. We would suggest you begin mucus observations and contact a STM teacher directly, and together you will be able to make a more accurate determination.
Andrea and Ron Gronsky
Answered By:
Andrea and Ron Gronsky
Andrea and Ron Gronsky, PhD, Professional Members of CANFP,now retired, taught the Sympto Thermal Method through the Couple to Couple League, in the Oakland Region.
