Levonorgestrel
"The insertion of it was so painful I was shaking, sweating, and nauseous. I stood up, white washed face, totally pale and about to vomit/pass out. Prior to this, my doctor gave me three "extra-strength ibuprofen". It wasn't nearly enough, I wanted to die. After one month of solid period bleeding, writhing around in pain in the fetal position, tears streaming down my face from excruciating pain, my mother took me to the hospital. They did an ultrasound to make sure the IUD was in it's proper place and not stabbing through my uterine walls. Surprise! My body was having contractions trying to push out the IUD. I had the IUD removed the next day. It took two doses of morphine to get the pain to dull out. Horrible, horrible experience."