I had my IUD place 9 months ago. Placement wasn't painful at all for me and I left the clinic feeling great. Within two hours I started having excruciating cramps, which they warned me I could experience cramping and to take a pain reliever. Friends that had the Mirena IUD warned me prior that sometimes they heard of people without kids experiencing cramps, but they didn't because they had at least one. I had horrible cramps on and off for a few weeks, and my periods got heavier during that time as well. I was taking a pain reliever pretty much every day to get through it, but it was tolerable most the time like that. I figured I would just deal with it because never having kids, my uterus was probably just freaking out because the sudden foreign object. There were the occasional unbearable cramps that left me in tears (the "contraction" kind that I can only mentally compare to someone going into labor since I have never had kids... they were THAT bad. Lamaze breathing helped, but I suggest not doing it in public if your not pregnant haha). I was also warned to check the strings daily, to make sure it hadn't moved because it could expel, i.e. the cramps. I had a 6 week checkup for placement and it was fine, I voiced my concern about the cramps continuing and my doctor said after about 3 months they should be better and she suggested sticking it out and to come back if I couldn't. They had gotten less frequent, so I decided I would. Sure enough, after a couple months my periods became much lighter but to this day I still have occasional cramping. My periods are pretty much none existant the last couple months, other than some spotting and occasional clots (yes, which I swear makes the cramping worse). The cramping definitely isn't as bad and usually comes and goes quickly... the pattern of it at this point is a few days before my period (or the almost non-existant one I have) I start to get light cramps. Then in the next few days they come a little more frequently, and I start to spot (or just get more mucusy substance-sorry for the details, just trying to help). After a couple days of that it goes away and most the month is perfectly fine. I have dealt with the cramping at this point because the other side effects of being on the IUD are much less for me and it is SOOO nice not having to worry about a bcp every day. I was on the progestrone-only pill (mini-pill) prior to having the IUD placed and it was great, but I wanted to try something a little more long term while I finish college and since children aren't in my immediate future. Although I LOVED the mini-pill, I always felt like it made it hard to lose weight. In the first 3 months of stopping the pill and changing to the IUD, I lost 20 pounds I had been trying to lose for 2 years. I don't break out or have crazy mood-swings and it really has little side effects for me. On the plus side, I have noticed my sex drive has increased with the Mirena IUD (seriously!!). So, I say- stick it out if it's not causing harm to your body and eventually it will pay off! (this is coming from someone who is currently having cramps- blah!) Good luck!!☺