Hi hun,
Don't give up hope, I am 24 and got diagnosed as having PCOS 6 months ago and I am now 4 months pregnant.
PCOS doesn't mean that you can't or won't fall pregnant.
I was going through IUI (Artificial insemination because I am gay and in a same sex relationsip) for 2 years and just after our 3rd attempt(6 mths ago) was told I had PCOS. I was 105kgs lost 5 kilograms, took my metformin for a month and started clomid (a tablet to make you ovulate) and the very next attempt fell pregnant, so yes it is possible :)
Keep your chin up. its nothing major :) Just another one of lifes little obsticles :)