I barely got off the pill Microgestin, because of the weight gain...

I barely got off the pill Microgestin, because of the weight gain and water retention, to have Mirena inserted the beginning of July. It has been nrealy 3 months, and I am still experiencing back pain, water retention, and my chin breaks out with acne every once in a while. I also have been experiencing moderate cramping and a constant slight feeling of being bloated. I was told when this was put in that weight gain was not one of the side effects, weight gain being the main reason for getting off the pill. I have not lost the weight, and it could be a combo of the pill slowly dissipating, or the Mirena does cause weight gain. Anyone else have the weight gain or slight increase in tendency towards water retention??