birth control
"I've had my Mirena for a year and 8 months. I'm a 40 yr old with 2 children. Yes it is very effective for birth control, BUT I have had unexpected weight gain of 40-50 pounds! I am so depressed because of it, because the only difference in my life is the Mirena. I also wake up with low back pain occasionally, and I did have spotting for several months the first year pretty much every week for many months. I cannot explain this weight gain, I am ready for removal. Also I have developed Bacterial Vaginosis at Least once from the Mirena. And I was not sexually active at the time and I'm in a monogomus relationship, so yeah..it sucks..."