Hi, I was a virgin until recently and me and my boyfriend decided to have sex. I have been on birth control for over a year now, but sometimes I forget to take it at my regular time. The night we had sex I think I took it an hour or two early. We used a condom also. It has been almost 3 weeks and I'm sort of freaking out. My stomach has been feeling weird for only a few days and now I wake up and felt nausea. I also woke up once with a heat flash. I am very nervous and am not expecting my period for another 2 weeks about. Please provide me with as much info as possible. Would I have felt the condom break if it did?