It seems like everytime that I drink acouple beers the next day I wake up with a pain in my stomach and a low grade fever. I went to my GI doctor and had a endoscopy and he said, beside the Barett's Esophagus and hiatal hernia that he knew about everything looked normal. He said, maybe the pain was Celiac disease or even Pancreatitis. He said, I would need to get blood work to check this out. My question is : Can the doctor tell if you have Pancreatitis with blood work "AFTER" the pain stops ????????