Levonorgestrel
"I am 15... no where near ready to have a child. Condom slipped off and went to the drug store right after the accident to get plan b. I read the reviews and I was really scared I was going to have side effects but also scared I was going to get pregnant so I took the pill about 20 hours after. I felt slight cramps but nothing like the side effects other people were feeling. Don't be scared to take this just because of the side effects because basically nothing happened to me. I got my period on time around a week later. Just started birth control"