"i knew going into it that the mirena device was going to hurt, but being that i have a very high pain tolerance and have gotten used to lots of uterine pain (i&#039;ve had really heavy periods accompanied by intense cramping since i was nine), i really didn&#039;t think it would be all that bad. i was wrong! i&#039;m so glad i had my fiance drive me and pick me up to the actual insertion appointment; after i got it, the doctor asked me to sit up and i almost fainted. my blood pressure dropped and i thought i&#039;d be sick. it hurt a whole lot whenever i sat or bent over for the first week and a half to the point where i thought something was wrong and kept checking the strings to make sure it hadn&#039;t perforated. it works well and i love it now.. but the initial pain is bad."