I had my mirena inserted May 30, 2007. Since my insertion, I have experienced the same scaring acne that others have complained. As soon as one painful pimple goes away, the next one pops up. The other side effect that I have experience is the water retention or weight gain. My hands are so swollen that I can only wear my wedding ring a few days out of the week. It feels like arthritis. I have not had any heavy bleeding, but my period is only a day or two with a pantyliner. So no real complaints there. I asked my GYN about the water retention and was told to eat mushrooms and cucumbers as they are natural diarretics. You can only eat so many mushrooms/cuc. I am not at the point that I need to have it removed. If I gain any more weight, I will give it more thought. It is unnerving to pay hundreds of dollars for something that would have to be removed prematurely.