when I eat. It doesn't seem to matter what I eat. It can be chicken or gravy or rice or noodles. Half way through the meal it seems like the food just stops going down. Then I get horrible chest pains and my mouth starts to salivate and I go in the bathroom and wind up vomiting. I have told my dr about this and all they say is "yeah it sounds like esophegeal cramps to me". What is that? Does it lead