Af due date

I have jumpy cycles, they range from 26-30 days never anymore than 30 though. I never really knew when I ovulated besides glow saying until this month. This month I started using opk, I'm ovulating right now. My last period was June 10th, and glow updated due to my opk postings, glow had my fertile window messed up, pushing my period further. It now says I'm going to have a 33 day cycle, July 15th it says I'm due for af. I think glow is wrong, but i don't know for sure. What do you ladies think? I don't know when af comes now and I don't like that! 😞