Just diagnosed with PCOS

So I found out Tuesday that I was pregnant by taking numerous of at home pregnancy tests. Started having some cramping so I went to the hospital Thursday night where they had informed me that I have PCOS and that's why it's been so hard for me to get pregnant. I know absolutely nothing about this disease and Google doesn't seem to help much. I don't have the normal symptoms of PCOS, I still have a regular period, no unwanted hair growth, I ovulate on my own etc, so how could I possibly have PCOS? I need some input from women who have been thru this also. Btw my pregnancy ended up being a chemical pregnancy. First pregnancy with my 8 year old was very easy and a success with no problems, second pregnancy ever and lost it.