Chronic Stomach Bloating and upper abdominal Pain

Has anyone been bloated for months.  I've been bloated before for 8 months strait.  Went to all kinds of doctors and every doctor said it was gas.  Well, I took everything to try to get rid of it and it didn't even hurt like normal gas pains.  I did a colon cleanse and that did help a little.  Finally, it did go down on it's own.  Now 2 years later I have this problem again but now I have Upper Abdominal Pain feels like there's a ball under my ribs sometimes.  I have trouble eating because I feel so full all the time.  I can only eat very little.  I am 51 years old, Diabetic, and have Gerd, had my gallbladder out, total hysterectomy .  It is driving me crazy and I don't know what to do.  I've just had a scope down the throat and colonoscopy and Cat Scan.  I  haven't got the results on the cat scan yet.  I have been tested for celiac disease and gastroparesis.  All came back negative.  I still say it has something to do with my pancreas or my liver. I was in the hospital before and my liver enzymes were elevated.  Does anyone have any ideas?  Very frustrated.  I look like I'm 6 months pregnant.