emergency contraception
"The condom broke the day before I was supposed to start my period and I took Plan B One-Step an hour after the 'accident'.  I was very tired and sick to my stomach but after a good nights rest (10hours, which is unusually long for me) I felt much better, the cramps felt like I was being ripped in two and were so bad they caused diarrhea.  Then 5 days after taking the pill I started my period, I have never been so glad to bleed so much.  I bled for 5days and it was pretty heavy.  It worked great."