question: Hello,  I have upper abdominal pain that radiates to my back, eventually I start having severe gagging & vomit.  After the retching/gagging subsides, the pain subsides.  I have had my gall bladder removed several years ago.  Had an upper endoscopy in Feb. 2013,  had double hernia repair with mesh 3/20/13.  thought that was causing this pain but i started having it again about 2 weeks ago.  I have had this for over 2 years & there is a pattern that it comes and goes.  Any Ideas?