Gee's it seems every post I can relate to almost,I had that feeling you mention, mostly when eating, my first experiance was while eating a candy orange slice(you can search my posts, if ya want a laugh)I really thought it was the damn candies fault,but the it became a scary little friend,I asked my NS, he blew it off, just told me to keep water nearby,I never did find out what caused it, but Thank goodness it went away,I pray it will go away for you to, cuz I know its pretty scary when it happens,just the sensation of it, gets the heart beating,Dianap.s small bites! and yes water does help, small sips, luke warm