I've read about 100 reviews now and I seem to be the anomaly... I had the mirena inserted without any pain and went back to work that day and was fine. I was supposed to get my period any day so she pregnancy tested and inserted when it came back negative. I was perfectly fine for 2 weeks until it finally came and decided to stay for 3 weeks along with it these painful horrible cramps in my lower back and lower front that I've never experienced before in my life (26 no kids - I did miscarry due to the NuvaRing which is why we discussed the IUD in the first place) so its been in for about 6 weeks now and I'm not sure if I just stick it out along with the spotting that hasn't stopped either or is this going to be like this the whole time? Is it true certain people's bodies just reject it?