Glow vs. Irregular ?? Please read!

So I've been irregular the past two months, like two months ago I was on a 33 day cycle and last month was 45. So i think it's because I stopped bc in September. So my ovulation might be off. So I've been using OPKs. Last month I had a ton of positive ones idk what was going on. I'm on cd 38 now and I stated taking them midway through my cycle.  Haven't gotten a positive, so I'm assuming I ovulated before I thought I did. 
​MY Q IS. 
​When I take an opk and it's neg, GLOW pushes my ovulation date back. So it's all inaccurate because right now it says I'm at peak day but that can't be because I am at the end of my cycle?