3 yrs heavy drinking, 1 yr smoking, bloodtest shows kidney/liver function ok. dull pain in lower right back, burning in abdomen. chronic pancreatitis?

Impossible to say: If you had blood tests because of these symptoms, i would hope that they also did tests for pancreatic damage, particularly a lipase (or an older test, amylase). Are you still drinking, despite the pain? If so, i would be very concerned. Easiest way to find if they are related is to stop and see what happens. Gastritis or even a peptic ulcer is a more common problem, and alcohol makes it worse.

Symptoms : Those symptoms can be related to different diagnosis. I recommend you see a gastroenterologist.