Wait a minute you finished it in 1 minute? The whole thing? Or one sip? It may be that you drank it or like Hershey said it may be that you are now party of the sour stomach club with milk.
I LOVE milk I would hav been heart broken if my stomach turned on it after surgery. How is everything else?
Now Cat sounds like you need to slow your roll and drop that straw when you are drinking ... hope you feel better soon, we are going to get the hang of this stuff soon.