I have had a mirena IUD for about 4 yrs and4 months. I found out about a year ago during my annual visit that the iud was not visible and had an ultrasound to verify placement. I was told that it was in place but the strings had retreated up into the os. Today I went to have it removed because of abdominal pain, constant spotting and discomfort. The doctor dilalted me and tried to retrieve it with this metal hook like device. After fishing into my uterus twice and causing me extreme discomfort and cramping I was told that it would not be possible to remove it. He believes that it has implanted it's self into my uterus and I would need surgery to have it removed. I am completed freaked out by this and don't ever remember be told of this complication. Has anyone else experienced this.