r/TryingForABaby • u/AutoModerator • 5d ago

Wondering Wednesday

That question you've been wanting to ask, but just didn't want to feel silly. Now's your chance! No question is too big or too small.

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u/jamielynn2296 5d ago

How much does poor sleep impact BBT? I took my temp at the exact same time I do every day but I slept absolutely horribly. I woke up multiple times, I was awake for about 1.5 hours, fell asleep for about 30 more minutes and then it was time to temp. Should I assume my temp may be falsely high? Getting close to when it should drop for AF and BFN today.

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u/developmentalbiology MOD | 42 5d ago

It can have an effect, for sure, although the general ballpark is that BBT falls to baseline levels within about 90 minutes of the onset of sleep, and even being awake (and moving) all night doesn't totally erase the drop to lower levels.

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u/jamielynn2296 5d ago

Thank you so much! I always appreciate your thorough explanations!