I am a 50 year old female. For the last three years my abdomen swells and dull pain on the left side in the back and the front under the rib cage in the middle to the point that I look like I'm pregnant. I don't know what causes this as I have had many tests done and everything comes back negative. I am on a strict liquids only diet for the last two weeks but I can't do this the rest of my life? Any suggestions? please