I would try staying away from dairy, see what happens.... I have had it happen to me...... very hard to pin point........

Could be dairy but it could have been the acid from the Tomato soup. Tomatoes have ahigh acidic content and if you are having issues with acid "Stay Away" Good Luck tonight let us know if it gets better.

There's a lot of dairy in the pudding. Soy milk was probably OK, maybe try clear liquids for just a day or 1/2 day. Hydrate and don't worry about getting in the protein or calories. Did they give you Prevacid? (Omiprazole) You take it once a day. I think that really helped me a lot. Calms the stomach.

Please don't get discouraged - this will not last.

Try almond milk, unsweetened original in place of dairy, I've heard many folks report having the same effects you describe from dairy.

I still get a bit nauseous - sleeved 7/24/12(with complications). i cannot drink water still. try one food item at a time.....it is a daily ordeal of trial and error. i promise you - it will get better. and give yourself the rest you need...surgery is hard on our bodies....keep reading the responses.... everyone is super helpful!

The surgery makes many people lactose intolerant. Also be aware of a bit of dairy in creamy tomato soup.