"i got the iud yesterday, and i honestly didn&#039;t think it hurt that bad. my doctor had to clean my cervix before she put in my mirena and the pain was minimal. then she told me that i had a floating cervix and she would need to pin it down so she could put my mirena in my uterus. well, she took a needle and literally pinned my cervix to my uterus. i had shooting pain up my abdomen and instantly threw up. i had no idea it would hurt that bad. i was throwing up for over five hours from the pain cramps i got. feels like a severe period cramp. i feel fine now, and i&#039;m sure i&#039;ll love it since i wont have to jack with the pill anymore, but the first day was painful. get numbed!"