The reason I recieved the Mirena was because of extremly heavy flow during my periods. I had to miss work a couple of times and that was enough of that. I had spotting for about two weeks after insertion(which can be normal) and after two periods(much lighter flow) I only have a slightly colored discharge once in awhile. If this had not worked an oblation or hysterectomy was next. The great thing is insurance paid for all except a fifty dollar co-pay since I medically needed it instead of just for birth control.
Aitch, let me know how your procedure goes. that way I will have an idea for the next one I get in. Good luck.