I had some of this when I was at my absolute worst in 2011. Like Jo*mar, it subsided after my ribs got adjusted by a chiro.

Later I had a different kind of swallowing problem where food would get stuck in my esophagus. It was really weird and really bad. It went away after I got on an inversion board program, though I wasn't expecting that. Since the inversion stretched out my spine and reduce pressure on nerves, I speculate that nerve compression may have been interfering with the enervation of the muscles along the esophagus.

So some things for you "try queue":

-- See chiro

-- Try inversion or some other form of traction

-- Learn self rib adjustment / mobility

Good luck.