I had positive OPK , does that mean I for sure ovulate?

Jamie

I have thyroid issues and want to make sure I’m ovulating. I have gotten very positive ovulation tests, where the test line is darker than the control.

Is this a guarantee that I ovulate or not?

I haven’t had a rise in BBT and now my opk is fading?

Did I still ovulate even though there was no rise in BBT?