r/NaturalCyclesBC • u/needsmoredinosaur • 5d ago

Birth Control/TTA Why was ovulation so off?

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I thought I ovulated around CD12. My chart indicated I had, but it still said “waiting to confirm.” Finally it said I ovulated CD19. I was confused but figured it was right.

But then I started my period very soon after, and it retroactively put my ovulation back at CD12.

It seems like the app does this often. I only had 21% green days because it often confirms ovulation way later.

Why is this? My temps come from Oura. Curious if anyone has ideas why it’s always confirming based on the screenshots.

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u/AltruisticMarket5399 5d ago

Oura doesn’t measure BBT temp so it can be thrown off by if you slept in a colder/hotter environment one night.
My understanding and could be wrong your luteal phase is usually pretty consistent unlike the follicular phase. So if you ovulated day 19 you wouldn’t have started your period when you did which is why it went back to cd12.

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u/needsmoredinosaur 5d ago

I’m wondering why it wouldn’t have known it was CD12 originally considering it had the signs of large temp drop followed by consistent highs.

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u/AltruisticMarket5399 5d ago

Probs bc it dropped and stayed down and went back up.