Hi gtnbr,If you're experiencing dumping, (it's very common with stomach surgery...I had it, too). As Bill said, be sure to stay away from sugars as much as possible, as they're triggers. Here's a link to an anti-dumping diet:
http://uvahealth.com/services/digestive-health-1/images-and-docs/dumping-syndrome.pdf/view
Hang in there, it gets better!
Happy healing,
Denise