I'm considering that it could have been the combination of things that I've eaten. I drank some water that had been sitting around in my room for several days (oops) late last night to take my vitamins. Other issues might have been some frozen potstickers or maybe the meat leftover from the party. Or maybe the ice cream that got left in my truck for a bit.

Given I felt much better as soon as I threw up makes me think it was the old water. I have consumed an entire bowl of thick soup and feel no nausea, just sleepy.