Ovulation days on glow keep changing by a day why?

Question

So I’m on cd3 and even though I tested with opks and clearblue my ovulation Callander days keep changing one minute it’s saying I ovulated on the 13th and ovulation coloured in green ends on the Wednesday the next it’s saying I finished on the Tuesday. I got my first peak on Monday so confusing 😳🙈

Answer

Thank you I figured it out now it because I didn’t enter my neg opk that I had before my peak one next following day and then I entered my low lh after the surge ended

Answer

The glow fertile window will move depending on when you enter peak or positive OPK’s. Generally glow estimates your fertile window until you enter OPK’s.

Ovulation days on glow keep changing by a day why?

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