I get an annoying pain in my upper side (under my lungs) when I am in a sitting position, mostly on the right side but sometimes on the left. Sometimes it goes away but seems to be hanging around more steady. Already had my gallbladder out. Feels better when I lie down flat Had a flare about a month ago, when on Cypro for 7 days, helped a bit but now on 30 mg prednisone for 5 days. Any ideas what this pain in the upper side could be?