OPK with PCOS

Alie
Hey girls I have a question for you. I know you can get false positives with PCOS. Today is CD 8 and just out of curiosity I decided to start OPKs early this month.  So this morning at about 7am I got a positive on a clear blue digital. I immediately thought it was just my PCOS. So I tested again tonight (around 6pm) and got a negative (on a wondfo). 
In past months I'd do them for a few weeks an never ever got a positive. They ended up being annovulatory cycles (or so I assume since they were 60+ day cycles).
Is it definitely just my hormones acting up? Especially this early in my cycle. I'm irregular but my cycle last month was 28 days.  I guess the only reason I'm second guessing is because I never got positives in the past. Thanks :)