dumping syndrome

I would call surgeon.  Something is up.

Yours are not the symptoms of dumping.  I can't begin to explain what dumping is like, I've been doing it for over six years now, and I still can't tell what will make it happen. Your body starts to sweat and shake/shiver. You have a feeling like you can't catch your breath and if you move you will die.  It's an adrenaline rush that mimics a panic/ anxiety attack in every way, shape and form and the only way to deal with it is with anti-anxiety medications - at least for me.  Pain and diarrhea are not symptoms of dumping.  Dumping is caused because you no longer have a part of your stomach that measures when to release digested foods into the intestine, instead it's a massive one-time dump of everything.  A little fat, a little sugar, doesn't take much.  I do hope you feel better.