I've been dealing with some throat irritation on and off for the last couple of weeks, and now it feels like mucus is traveling from my throat down to my chest, especially after I eat. Eating doesn't bother me, but afterward, it feels like the mucus shifts to my chest, even though I don't have a cough, cold, or a fever. I've also noticed a bit of pain in the middle of my chest. Can you help me figure out what's going on?