A member asked:

I think i am pregnant but confused because my bbt would be high in morning when i wake but through out the day..its up & down.why is this?

A doctor has provided 1 answer

Cortisol changes: Your BBT is based on taking your temperature when the diurnal aka bio-rhythm run by the hormone Cortisol is least active in the A.M. Once the day begins, Cortisol production will rise and that will change your BBT. If you think you are pregnant, run a pregnancy test.

Answered 1/8/2016

1.7k views

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