So, my boyfriend and I had sex a few weeks ago (November 9th) and he was concerned that I might be pregnant. But the only reason he thinks that is because we had sex a little bit before he put a condom on. He didn't cum though, but he's still concerned. I just got off my period so I told him it was fine, however his friends girlfriend got pregnant and still had periods. Do you think I have need to worry or no?