Boy, does this sound familiar. I too am constantly moody, losing my patience over the littlest stuff and can fly off the handle in a second. I hate how I've become since Mirena. It took me a while to put 2 and 2 together, but now I'm planning for it's removal later this month. I can't believe I didn't know of all this before I had it inserted. I did do research, but I've had it for 3 years now and I think a lot more data has come out. I'm nervous about the heavy flow again, but I'm desperate to get my old self back that I'm willing to take the chance. Good luck and believe me you're not alone.