Constant pain in uper left abdomen.

Hi, I have this problem from last one and half year. initially I thought it might be a gas problem. But after a long time problem still persist. Pain is like pointed on a particular area that I have stated above . Start and goes up to back in same area . As per my knowledge is concern it's started just after my stomach is get heavy with fat . I have quit large belly size as compared to my whole body physic. I had consultant the dr in last year january. They prescribed me ultrasound in which as per report it was "Faty infiltration of pancreas" due to which I am not able to digest food properly as dr said. Now pain is still going. N I am really upset about it. Not even sit in office for 1-2 hr continues. If I eat or drink any thing pain get started. And evry tym I do burping and my stomach get filled with air like ballon. "Bloating" . Please help me to get Ride of this problem.