I Have Had Several Tests Done For A Problem That

I have had several tests done for a problem that still exists that no one can figure out. My upper right side/back to front is tender to touch, hurts to lie on and sometimes goes down, but mostly you can still a bulge. I thought it may be my liver pushing through my rib cage... A feeling like that. I had a series of tests, colonoscopy, endoscopy, and had to drink barium for a MRI on my right side all finding nothing. It's clearly something and keeps me from doing pretty much anything. Hurts to put on even a loose bra. I have been to specialists and no one can come up with anything. I don't and never had drank, smoked or done any kind of drugs. Any suggestions? I'm at a lost and in much discomfort. I have MS but they all said that has nothing to do with it. Thank you very much, Terri