Anyone with pcos conceive after having first baby?

I have pcos and other problems as well. It took us a long time to have our son, over 5 years. We decided to go ahead and try for another one again. I had one period since having my son on December 13, 2008. I was expecting to start another one last month on the 21st and it did not come. I took a test on the 22nd, probably a little soon and it was negative. I feel like I am pregnant again but I'm not sure yet. I go to the doctor on the 12th of this month. I was just wondering if anyone with fertility problems had success with more children and how soon. Say a pray for me please. Both my husband and I had a dream we were having twin girls. That would be alot of diapers lol but we will take whatever God gives us.