emergency contraception
"I just wanna add to what everyone else is suggesting if you take this within 72 hrs It Really Does Work & Just Breathe !! I can't stress that enough! I took this pill 25 hours after intimacy & was scared to death for like 2 weeks! The nausea side effect was lasting more than the 5 days it read on the paper or maybe I just freaked myself out.. 
However it's always good to practice forms of protection.  But I am totally happy. Menstruation came very early for me as well. Best menstrual day ever lol lol !!!"