I have had Mirena not quite 2 years. Since insertion i have had plenty side effects your doc "forgets" to inform you about. I wish now I would have researched this more! The side effects I've encountered are weight gain/bloated, loss of sex drive, mood swings, abdominal tenderness, cysts, depression, hair loss, headaches, pain during intercourse, and PREGNANCY! Up until a couple days ago I just wrote off all the other things. I woke up 2 days ago with extreme abdominal pain. I went to the ER and give a urine sample. The nurse tells me im pregnant. (I cant tell you how shocked I was, that was the last thing on my mind!) So they tell me because of the amount of pain i had it was probably going to be an ectopic (tubal) pregnancy. They did ultrasounds and couldnt find a "baby" but it looked like I had a cyst on my right ovary. I am, however, definitely pregnant its just too early to see. They removed the IUD in the ER, and sent me home to go see the OBGYN the next day(yesterday). Because of Mirena im at high risk still of ectopic or miscarriage, so I have to go back to the OBGYN tomorrow. As long as the Hcg levels keep going up I should be ok. This form of B/C is said to be the best on the market, but the are being sued now because of a similar situation to mine. I wish they would take it off the market so all of these poor women dont have to go through anymore of this BS. As a matter of fact on the Mirena website there is a FDA link if you want to put in a complaint about it. If enough of us say something maybe we can put an end to it. Good luck girls!~