IUD causing sickness???

I was just looking to see others opinions on Mirena, as I've had it for a year but I'm starting to feel sick more. This last week I'm hungry but almost nauseas at the same time. Someone I know said this happened to them and it was because of Mirena. Has anyone else gotten sick from it or anything? I mean, I hate to sound like an idiot or ask a dumb question, but I thought I'd just ask others to see.