I had bypass surgery over 7 years ago and did fine. Gained some weight back but kept it around 140-150 lbs. Then a year ago I started getting nausea after eating and never knew which foods would cause it. I would throw up for 2-3 days and then be dehydrated and dizzy. Went for all kinds of tests and not gallbladder, not stomach or food being left that isn't digested. Gastro doctor said finally just don't "eat too much." I am hardly eating what I did right after surgery and now down to 113 lbs. Less than after surgery. This month has been horrible and have only kept food or water down for about 2-3 days out of the month without getting sick. Any ideas? I read about the pancreaze medicine and may ask doctor about it. I am just depressed over all of this and sick of being sick.