emergency contraception
"I had sex for the first time ever, unprotected, on my day of ovulation. He pulled out but I was still anxious because I knew that my sisters and I were all a result of the pull out method... So we got Plan B and I took it probably an hour and a half after sex. I was really worried because I had no immediate side effects and I had "the feeling that I was pregnant." (The only side affect that I ever got was bloody noses for about six days after I took the pill.) After reading the reviews on here  I felt a lot better, but the thought of pregnancy still nagged at me. A week after sex I took two tests, both negative. My period started about five days early. Try not to stress out, this pill actually works"