pain in liver area

I already have a peptic ulcer which I have had since the beginning of February, and take Lansoprazole and ant acids. I have suffered with IBS continually since January this year. My lower and upper abdomen is constantly swollen. I am getting pain in my right side and around to my back in the liver area, am now taking Tramadol for this. I have had a scan and the scanner lady asked if when I eat fatty food does this make it worse? Yes it does. But other than this she has scanned my kidneys, pancreas, spleen and liver and gallbladder and in general everything is ok, so what could be the problem? whats causing the pain? Do I have fatty liver? She did tell me that she cannot see any gall stones. has anyone got any ideas what this could be? Its so frustrating I thought I would get some answers from the scan.