I ve been on a prednisone taper for the past 8 months. I am currently on 3.5 mg daily.Three months ago while in emergency room with severe upper right abdominal pain, a CT scan revealed that I most likely passed a gallstone. Since, I have had no issues until the past 48 hours with burning nausea like pain in middle of gut, especially after eating. I am very active, 63 year old runner, average weight, eat healthy.