I have been having pain in my back and right side and abdomen for a couple months. I went to the hospital they did a cat scan and came back my small intestine was inflamed. But they didnt know why. I have also had the mirena in for about 2 1/2 years and I'm not sure if it is the mirena or something more serious. I've been back and forth to the dr but havnt gotten any answers. What could it be?