Period/pcos question?

If this is posted in the wrong place I apologize :p

Anyway my husband and I have been ttc for 2 months but have had un protected sex for nearly 4-5 years with no pregnancies. (Not even a scare) I don't get my period that often, actually since 16 to now (24) I've had maybe 10-15 periods. I've been to at least 3 or 4 doctors about it and they've just started to assume I have pcos. But other than my very irregular cycles I have no other symptoms of pcos. I am over weight but like I said it's been like this since I was 16.

My question is really has this happened to anyone else ever? And could this drastically effect our chances of having kids? We're trying out some ovulation tests but I read on the package that pcos might effect the outcome....