Should I see a doctor?

Kerri
My husband and I are TTC. I took my last BC pill March 10th, had withdrawal bleeding and haven't had AF since (almost CD 75). all tests show BFNs!! I had positive OPKs about a month ago. Over a week ago, I cramped for 3 days with no AF. 
I was on the pill for 10 years, so I am assuming my body is taking it's time adjusting, but I worry that something's wrong (e.g. PCOS, endo, etc.). I've always had issues with acne with and without BC, but I don't remember my periods being heavy or irregular before BC.  I've heard to wait 3 months after stopping the pill to see the doctor. Is it necessary to wait, or should I try to get this figured out ASAP? Thanks :)