If I remember correctly, you suffered a similar episode in Las Vegas last your and that was before your gastric bypass.
Your symptoms are certainly suggestive of "dumping syndrome" following gastric bypass whereby food is "dumped" straight from the stomach into the small bowel ( I think the you had bypass surgery).
The answer to this is dietary, but i am not an expert in this field so if you Googled "dumping syndrome after barometric surgery" you may get good and expert dietary advice.
Wait until next week to see your team.