I have felt the worst I've ever felt with this and didn't even think about it until lately. We got it put in in August of 2007 because my OB thought birth control would help stop the extra bleeding I was still having 3 months after my daughter was born and I went with the IUD because I'm not very good at taking the pill every day at the same time, etc. I've been glad that the bleeding stopped, but didn't put all my crumby symptoms together until now. I finally realized that the only constant with everything different I've been trying to stop the symptoms has been mirena. I have had the worst headaches (migraine type at least 3 days out of every week), cramping like none other, severe mood swings, nausea, and dizzy spells that put me on the floor. I have fallen down at work because of dizzy spells, not cleaned my house for a week at a time because I felt like I had the flu every time I tried to move, not been able to work as a medical transcriptionist because my head was throbbing so bad, and had break downs of crying because I feel like all my kids do is make me angry, along with my husband telling me that things need to change because I am always cranky with him. I have never had a problem with sex drive, to the point of being overzealous to my husband sometimes, until now. I have to make myself do anything and it feels like the most awful thing since the first time. I've suffered depression in the past, but never like the deep depressions that I've gone into lately. It's hard to believe so much power to change me can come from something so little and seemingly harmless.