Levonorgestrel
"I am a recovering heroin addict, sober now for 4 months, and had I been prepared or well informed on this whole situation I may have waited. Anyways, I am 23, never had kids, 1 abortion...and a failed pregnancy. 
Anyways. This was all my mom's idea, never really used bc pills because hormones made me nuts, the pain of the insertion was unbearable for me, and the ride home I felt I was going to vomit.
The pain is uncomfortable, I have not experienced menstrual cramps since maybe 5th grade. Not only that, my periods were always ridiculously irregular and for a good year I never even had a period. I am sweaty, cramping, and dizzy. I am hoping this will all be over soon, ibuprofen and Tylenol I don't believe ever works. Just got today."