Always ovulate but this month not able to confirm?

So I’ve always ovulated for as long as I’ve been tracking it - it’s been about 4 months since my MC.

This month I never received a positive OPK, I tested at least once a day which is what I normally do and no positive. I had EW CM on Saturday... I’m thinking I haven’t ovulated or won’t this cycle esp since my BBT chart is all over the place.

Has this happened to anyone and you ended up ovulating late in your cycle? My cycle is 28 days and I’m on day 20.

I was a little stressed around the time I should have ovulated but it wasn’t “extreme” but this is the only thing I could think of that would make me not ovulate... any advice or did this happen to you?