My girlfriend and I had sex. I went to pull out before I ejaculated and after I pulled out my sperm shot out the end of the condom. I am unsure if the condom slipped down or if it tore during sex. I pinched the tip while putting it down as I always do. Anyways, I am worried my girlfriend is pregnant. She is on birth control and is pretty good about taking it as directed. She has been on it for a year and a half. I also pulled out, but I was worried that if it tore wile I was inside her there was a chance of pre-ejaculatory fluid. This being said I had her take plan b. She took it about 1 hour to 1 hour and 15 minutes after sex. This all happened on a saturday night and she was supposed to start her period the next wednesday. It is now Friday and it hasn't happened yet. I am starting to get very worried and I figured this would be a good place to ask for help. I almost 99.9999999% sure she won't get pregnant but the fact that her period is late really has me worried. Please help and thank you in advance for all answers.