I have had Mirena since June 2007. Since January 2008 I have had nothing but problems. I have had numerous ovarian cysts that cause excruciating pain from my lower abdomen and back all the way down my legs. My doctor that put it in (a male) swears up and down that my cysts and pain are not related to the Mirena. I got a a second opinion today (a female) who says the Mirena ABSOLUTELY can cause my problems and that she has taken more out than she has put in. I loved the Mirena in the beginning because it did stop my periods. But then I started noticing weight gain and no matter what I cannot get it off. Then the abdominal pain and the lower back pain. I go for another ultrasound next week to see how big my current cyst is and if it is restricting blood flow to my ovary. If there isn't any blood flow I will have to have the cyst, and my ovary, surgically removed. I don't recommend Mirena to ANYONE!