Unsure

I’m at risk for pcos however I am unsure if I have it. My period was always regular but for almost a year now my period will either come on time or as late as 8 days. I’ve been trying for over a year to get pregnant with zero luck. I’m curious if anyone else got diagnosed later on? I’m in my 20’s. I’m going to try to check if I ovulate this month for the first time.