Am I pregnant?

Hi everyone, I had a beautiful baby boy March 13, 2008. I bleed for about 2 weeks after my c-section and have had only one period since. I believe it was the end of June beginning of July. I breastfed for about 16 weeks, and that is about when my last period was. I am concerned I might be pregnant. I was never regular before I had my baby, I could go about a month and half in between cycles. I am scared to death to take a pregnancy test, I did not plan to get pregnant again for at least another year. My husband uses a condom everytime, but there were a few times where he inserted for a quick second before putting on the condom. I have not started birth control yet, as I have been waiting for my period. Has anyone had this happen? What should I do?