My boyfriend and I had sex. He didn't realize until after he came and pulled out that the condom had ripped while he was inside me. The condom had emptied inside me, leaving his semen inside me. I was terrified that I would get pregnant. I took Plan B and I'm lucky because I'm on my period now. What will cause a condom to break and why? My boyfriend is pretty big down there could that be the reason? Im afraid that his condom will break again and petrified that I will get pregnant. Im 19 and planning on going on birth control very soon, but in the meantime.....