I just had an upper endoscopy due to difficulty swallowing. I expected to have a little throat pain afterwards which is fine, it's mild. But ever since I had the first bite of food after the endoscopy, as the food goes down the esophagus it feels like it is passing over glass - sore and painful - especially as it reaches a point about 5 inches above the navel. Doctor said he never heard of that! I never had that before....just started with the first meal after the endoscopy, so I know it's related. Anyone have any ideas?