I have had my mirena in for two years, 7/07. I find all the posting on this and other sights very interesting. I haven't had any adverse reactions other than the decrease in periods. I have had a decrease in my sex-drive, however I don't know if I can blame it on the Mirena. I have suffered from depression for years, it's hereditary, and I have always attributed my lack of sexual interest to that. I have been on medication for years for depression and I have been to counseling. I am planning on keeping it for the the next year until I am ready to have children. I will just have to wait until then to find out if it really does effect the libido. As someone posted earlier, listen to your body; it will tell you what to do.