I have PCOS as well, I was diagnosed with it shortly before I got married at 20. My doctor told me it would be best to try for kids while I was young because I was already sub-fertiel and that would get worse as I aged. I was a 20 year old on fertiklity drugs, kind of odd I know! I have 3 children now (I'm 30 now) who are 8, 5, and 1 year old. My 8 year old and my 1 year old were concieved on Clomid and Metformin (though I am not insulin resistant the Metformin supposedly helps anyway). My 5 year old was our miracle conception when we were not even trying! I have looked into adopting when we thought baby numer 3 was not going to happen for us, but it is seriously expencive, even domestic adoption cost a lot. The fertility drugs I was on were not expencive because I had health insurance that covered them so I just had to pay a $10 co-pay. My doctor and I discussed going to the next level with injectable drugs (mine were all oral) but I was hesitant and luckily I never needed them, although baby number 3 came after over 2 years of trying, off and on drugs.
Bottom line, PCOS suck, but you still can have children and that is a great blessing! I am happy with my 3 beautiful little ones and I think we are done! But I think it is important for a couple to be able to DECIDE that they are done having kids, and not have that decision forced upon them by a disorder like PCOS, so try for another baby if that is what you really want, go for it! Best of luck to you!