PCOS :(

Nicka
I diagnosed for almost 2 months in PCOS. I am 20 and still underweight And i just take a pill for 1 month only but I stop it now because gosh! I can't take it the pill I feel always nausea and of course my partner and I trying and trying. This coming Thursday I'm going to My ob gyne because my menstruation is last September 11 and now 1 month don't have. And I wish I will not experience miscarriage. :( 
And how long this if I really want to have a baby?