emergency contraception
"I took this pill next day after having unprotected sex with my bf. I don't want to be pregnant because I'm still in studyingl. I didn't experience anything other than the lower back pain and heavier than normal periods for the next 3 months of each period. I also didn't get the breakthrough bleeding that some of you girls experienced. 
4 years ago I used Plan B as well I remember it was in 2 pills form, and it also worked fine and I think that two pills formulation is better, because I didn't get any lower back pain and the heavy flow periods as a side effect. So I wonder if they bring back the two pills formula than only one pill, may decrease the back pain and heavy flow, or  I'm just getting old. haha .
Good luck to all of you!"