I had the Mirena for about 6 months now. I do not really have any of the side effects that people have been complaining about on here and I consider myself lucky! My best friends gma is a nurse practitioner and she said the Mirena can make you have a lot of the same symptoms that pregnancy make you have. My biggest issue during pregnancy and now is I seem to get upset/angry or cry a lot easier than before pregnancy. I have also had SOME head-hair loss, but that was also a huge issue during my pregnancy. One of my friends had the Mirena and it made her really sick like most of the others on here. She also had a HORRIBLE pregnancy, so I dunno, maybe the thing about the same symptoms as pregnancy has some truth.