That's true. I have a friend who suffered from PCOS but was still able to conceive and deliver her baby regularly without any complications. You can say they're really lucky. But I think it's just in the manner in which you take care of yourself while you're pregnant. Of course, this includes going to your Gynae as much as possible. This friend of mine was the one who introduced me to this Gynae and I do think he's really good in what he does. You can also ask for his opinion on your situation. I think this is his current website.
http://www.womensclinicofsingapore.com/
Hope this helps. Good luck!