Within a few minutes of beginning to eat, A feeling comes over me & the food stops in my throat & I begin to choke. It doesn't happen often & comes unexpectedly. I run to vomit & it's acid type saliva. The sensation of choking doesn't stop until the most of the food comes out, during which air is stuck as well. No certain foods appear to set it off. Today,in a restaurant,it happened.We left,I had to stop every few miles until it all came up. I felt weak afterwards but otherwise ok. Any ideas as to what may be causing this & what type of doctor to see about it?