Hi. You'd have to be diagnosed by a doctor for PCOS. If that is the case, there are dietary changes you might consider to help address it. Look up The Fertility Diet by Dr. Jorge Chavarro. I read the book and it made complete sense to me. You'd think I was related to the guy, I'm such a fan of the book, but I'm not. In a nutshell, ovarian function is compromised by high blood sugar and fat (even you are thin). So, get rid of the the white bread, white rice, white sugar, processed foods, trans fats and replace with whole grains and whole milk. The book discusses studies with amazing success using dietary changes.
good luck.
I have pcos. I realised when I came off pill that I would not bleed for approx 80 days. I was told there are 3 signs to determine if you have pcos. 1 is blood test to test hormone levels. 2 is skin condition - acne on face, chest and back; excess body hair. 3 is scan of ovaries. If there is a necklace of cysts this is a clear sign of pcos. Treatment for pcos is in tablet form or you can have surgery to blast the cysts. Treatment is effective so don't worry, but you do run the risk of a multiple pregnancy. Good luck.