Recently I have been getting a tight feeling in my tipper chest near my throat as well as a little in my throat. There is no specific time when it happens but mainly after I eat. I'm always burping my food back up and burping up sour stuff. But no burning feeling in chest, no chest pain, no short of breath, etc; I do have mitro valve prolapse but I got it checked a year ago and was told it was leaking very very little. I'm also going on a plane on Tuesday and I am scared and concerned. I do suffer from panick attacks but they come on suddenly.