This happened a few times, but there was one time that the pain was pretty bad. It started with pain right at the bottom of my rib cage and sort of became that pain, but with a burning sensation around my whole belly. It lasted for about 30 min and went away slowly. Now the pains I've had before on that side happened when I was in bed on my left side. Once I felt the pain I moved to my right and it felt a lot better.