I had sex with my boyfriend the weekend after my period ended. While we were doing it the condom made a funny noise (like a chewing gum bubble popping) but he said the condom didn't break. Just to be sure I took the morning after pill the next day. A week later I started bleeding and then it stopped after a week. I took a pregnancy test 5 days before my next period was due and it was negative. Now my period is 5 days late, I've been getting some period pains and some sharp pains in my stomach. Am I pregnant?