Copper
"I had the Paragard inserted approximately two and a half years ago. Unfortunately, I've always had severe cramping and heavy periods. So, when my doctor explained that the IUD would cause cramping and heavier bleeding, I thought "it can't be any worse then what I'm experiencing now". But I was wrong... Not only was I having heavy bleeding during my period, but I started to spot between periods. In addition to the spotting, I would have cramping throughout the ENTIRE month! The pain was exhausting me. I knew something was wrong. I called my gyne and asked to have it removed in hopes that i can return to my "normal". When she inserted the speculum today, she said she could see the tip of the IUD in my cervix... aka, my body was rejecting it."