I am 21 years old, and have been on Mirena for 1 yr and about 7 months. It's fabulous, really to never have a period and I don't get the cramps that others seem to get. As for the weight gain, I can't say much: I've always had problems with my weight, but I was able to lose a good deal of weight while on it, and although I've gained even more than I lost back, I think that has more to do with the fact that I'm not walking 4 hours a day anymore. My question is about the back pain,the depression, and the menopause like symptoms. I checked the official site, and nothing was mentioned. This really bothers me. I've always had a slight problem with depression, but this is ridiculous! The pain in my back can't be allieviated no matter what I do. The scariest thing, is definitely the menopause likeness. I haven't bled in 9 months, great, love it. And I've always ran a little hotter than normal, but I'm constantly burning! My inner temp is fine, but my skin feels like it's on fire, like a hot flash that never ends. I can be sitting in the car and my boyfriend can feel the heat I'm giving off from 2 feet away. That's not normal. It's always so hot!! Anybody? Help?