My guess is it is the mirena. I was getting depressed, anxious and practically couldn't function just like when I was on mirena and in 2007 my doctor prescribed prozak. I took it for a month and then slowly weaned myself off of it. I feel like it did help me reset my brain and I started taking natural supplements. Then I had mirena removed. Did you have any of the bad symptoms just prior to prozak? Sorry I couldn't be more help but there is tons of info on this board. I used to love mirena for the first couple of years I had it. But it made me feel like an 80 year old and I didn't think it was the mirena until I found this board.