I had the Mirena put in last August after having twins in March. ...

I had the Mirena put in last August after having twins in March. Have had no complaints until recently. Now all of a sudden I notice that I am nausea frequently and keep having fluttering in my belly that makes me paranoid like maybe I am pregnant. I don't really feel pregnant but then again I keep feeling this weird movement that makes me think I could be. I have not had the acne everyone is describing except maybe these little bumps I keep getting on my arms that were never there before. Only have had the nausea and recently the fluttering in the belly. As far as the weight gain, I do feel like maybe I have gained some weight. The biggest thing I can't seem to get rid of is my belly still looks a little pregnant. I noticed a few others have had the same problem, but I have been equating all of this to having twins. I don't have anything else to compare these things to, since I only have my twins and have never been pregnant before. After reading this I think that maybe it is the Mirena and not be just being paranoid about being pregnant! Does anyone else keep feeling that too?