There is a lot to learn with PCOS and much they still don't know. I can tell you that it does put you border line type 2 diabetic. This means, it makes it easier to get pregnant if you are following a diabetic diet. My specialist said best things to eat was fruit, veggies, low fat meats/chicken/fish/seafood, diet pop (if you must drink it), skim milk (let me get away with 1%.), brown rice, sweet potatoes, whole wheat bread (have to be careful on this one some say wheat but they are really white bread with wheat enrichment). I generally did multi-grain (no problems there). Stay away from as much artificial or processed sugar as possible.
If you do end up needing actual fertility treatment, they will generally start you of on the fertility pill, then if that and the diet doesn't work, then start you on the shots. (these generally work, worked with both of my pregnancy's). However, they do run tests to make sure the tubes aren't blocked. If they are, they can generally unblock them or let you know what is needed (didn't have this issue).
If you are in the cincinnati, ohio, area, I greatly recommend, DR. Chin. He is very understanding, compassionate, knowledeable, and awesome at achieving the goal. (he does not do invitro anymore) but does all the other treatments leading up to that. If you are elsewhere, sorry, no recommendations.
If you want to know more, feel free to email me.
T.