Levonorgestrel
"I got the IUD only one week ago, so I'm guessing it's too soon to post and will update when more time passes. The insertion was very painful to me. I cried a little and then it was over. However the real pain has been for the past 7 days since insertion. I have terrible cramps and major mood swings. I am also spotting and truly haven't had any desire to have sex with my boyfriend because I've been in so much pain. I will be  giving it 2 more weeks but I can't withstand so much more of this pain. I'm 28 years old and I'm an attorney so it's pretty disruptive to be in a meeting with a client when I'm cringing because of the pain. As of now, I truly regret this decision..."