Last Cycle

This cycle

So with my last cycle there was a very clear surge and it’s gradual onset. Highest was like 1.47 (using Premom app). This Cycle I had a “high” OPK at .85 and they said that was my surge. However that was only cycle day 8 and it was not positive yet. Close, but not. I do test 2x a day so I don’t miss it.

Has this happened to anyone before? Do you think I would have ovulated this early and it not shown yet? Do you have high OPKs that turn negative and eventually you get your positive later?

This is only my second cycle using OPKs and first cycle temping so I’m sorry for the lack of information to go of off 😬 TIA!💖