emergency contraception
"I took Plan b after an unexpected unprotected sexual situation.  After the fact I realized it was right around my fertile time.  I went right to the store and purchased Plan B.  I took it about an hour after sex.   I am usually very sensitive to the hormones in oral contraceptives (that's why I don't take them) and I was very worried about the side effects. I was surprised, I had no side effects at all.  I was concerned because I thought maybe it wasn't working because I had no cramping, headache, nausea, etc like the package said could happen.  I calculated the day that I should get my next period and waited.  I was sweating it the entire time!  I ended up getting my period about 2 days earlier than expected...fine with me!!"