I get that same exact feeling!! Mine I think is due to allergies/sinus stuff, post nasal drip I usually only get it at night when lying down or in the morning when I wake up. It definitely throws me off for a little while.

Usually if I drink hot tea when I get up that helps, other than that just kind of wait till it passes. Usually within 1-2 hours after waking up everything is back to normal. As far as eating with that feeling I just force it, I have yet to find a way to make that more comfortable yet.