Well, one thing I can say about that is that during my ten years of sobriety I had that a few times. Once in a while it was from overindulging in something like garlic (seriously!) and other times just dehydration or also jet lag could do it for me. But what I never had those days was guilt and fear. Yes, I felt ******, but I knew it would pass and it wasn't because I was stupid.
Hope you feel better soon! Fluids and rest, my friend!!!
Beth