Opks work or not?

Corrina • have 4 kids with partnerthat passed away 7 yrs ago. me and my OH are TTC our first baby together
Right.....some months I feel like I'm ovulating...sexy and all come here eyes etc...cervix feels right...but opk says no...not even a faint line so I have stuck with it. My partner doesn't live with me at min so have to arrange things so can't just do it on a whim. Anyone had this problem. Or am I just feeling ovulation way before?