I got my period August 19. I started dating someone a few weeks later. I want to make sure that I don't get pregnant. So I started taking birth control August 30 that Sunday. We had sex the Thursday. We started kissing wish led to sex. We started having sex and he didn't have a condom so I made him stop to go and get one and continued and then I had him pull out with the condom so he will cum in the condom. I just finished my birth control on Saturday. It is a 21 day . It is Tuesday morning now and I still haven't received my period. I didn't take a plan b or morning after because I was taking the birth control.I also had that spotted Brown yesterday. What do I do? I am worried I am pregnant..