"Amylase" and "lipase" are the blood tests your doctor should be doing for pancreatitis... Liver enzymes (ALT/AST) would be wise to look at also. The left lobe of your liver actually spreads half way across your lower chest / upper stomach, and a sluggish gall bladder could cause pain radiating to the stomach pancreas area. Pain after meals is typical of both gall bladder and pancreas problems.
Your symptoms should warrant a "Comprehensive Metabolic Panel" or CMP. This is the standard of care for someone presenting with your symptoms. If your doc doesn't want to do this, I would ask him why!
If your doc wants to keep up with the one or two tests per visit, I'd keep going back until you get to the bottom of this. Abdominal pain should not be ignored, and you shouldn't simply try to live with this and hope it goes away.
A bladder infection shouldn't cause upper abdominal pain or liver/pancreas inflammation. Point to where the pain is and say "up here, not down there". A bladder infection that has spread to your kidneys can cause pain higher up, but this is normally in your back or flank, not your stomach.
Best of Luck to you!
Last edited by BillinSD; 10-04-2012 at 08:49 PM.