Copper
"I had the worst experience ever!! I went to get the iud inserted. While I was certainly expecting some discomfort, it was the worst pain I have ever felt in my life, and this was after my csection. Yes, it hurt worse than my csection. I could barely talk the entire day I was in so much pain. My husband actually carried me to the car because my legs kept giving out. The first 3 days I was pretty much bed ridden. After a month I felt okay, but sex was so painful I could barely stand it. I would get shocking pains.I was shocked when I didn't have my period to find out I went through all of this pain to be pregnant 5 months later. Iud was no where to be found. It had expelled somehow."