emergency contraception
"My period was on May 3rd-7th. My bf and I had intercourse on May 11th. Took the pill on May 13. Started bleeding May 18. Lasted for 4-5 days was light then turned really heavy! I felt EXTREMELY nauseous, bloated, headaches, tired, eating a lot and breast soreness from the pill. I thought I was pregnant. I didn't even know if the May 18 was a period or not. Finally today June 20 I'm bleeding!!! So I guess May 18 was my new period."