Yesterday I drank some Protein shake and my stomach was just fine with it. Today I drank the same Protein Shake and a few minutes after drinking it I felt nauseated. It's getting better now after drinking some other Fluid half an hour later but I'm not entirely feeling good right now.

I wonder if this was early dumping though I'm not sure why yesterday it was fine and today it wasn't. I already had this experience two days ago. Both times the same food and in the morning it wasn't ok, in the evening I tried again and I felt perfectly fine.

Anyone else has this problem?

Had to vomit yesterday evening about half an hour after a protein shake. And yes, bile is really vile.

It likely isn't dumping. I had MONTHS where the same food would be okay one day and not the next (sometimes even during the same day). I don't have an explanation for it, but just to say, you are not alone. I have read it from many people. Often times you can go back to that food in a week or so and it is just fine.

Thanks for your answer. It always feels good to know that you're not alone with certain things.

I had some cold sweats about 20 min after eating and felt very weak. That's when I thought it could be early dumping after all. I drank a chamomile tea after vomiting and my stomach settled again.

Today I ate twice so far and it feels fine. Not sure if I should risk a protein shake today.