I too have the4 Mirena. I've had it since September 2005. I've gained about 25 pounds. I'm teh heaviest I've ever been. I am 23 years old. I'have two children. I chose the Mirena b/c I thought it was a dream come true. (yeah right) I'm beginning to believe , like many other women; that this thing is making me crazy. But I have a huge dillima... What kind of birth control do I switch to? I'm not ready to call it quits in the reproductive area but I don't want another baby just yet. I've tried the pill- My second child was birthed from that. I have almost every side effect mentioned on here. especially severe hair loss ( I'm 23!!) Any one have any suggestions? Please HELP!!!!!!