I woke up today and had abdominal pain and nausea. I used the bathroom (#2) and it came out diarrhea-like. I then (being incredibly hungry) went to make something to eat. While making the food, I was drinking water, as I was abnormally thirsty. But once I finished, and was about to eat. I had a huge rush of nausea come over me, and I threw up all the water I had drank. Can this be explained? I don t have any acid reflux issues, and I m not (that I know of) hypoglycemic. I m a 28 year old male, that is relatively fit, but not very active.