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Ovulation question

Je • Mon, Apr 28

Last month it looked like I had a positive opk cd11 (posted it on here and people agreed).

AF came a day late that cycle. So my cycle was 29 days.

Here I am at cd13 and so far no pos opk.

Glow tells me my fertile window goes for a couple more days.

A diff app says I just started my fertile window yesterday.

I'm very confused!

Thoughts?

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