KD22-
I get the same thing! I have on allergy medication for years and my doctors (who's a close to retirement) said he had no idea what these "chunky" things were! My husband, sister 'n law and brother 'n law all have allergies and they gets these as well. I notice that when my allergies are worse, or if I'm close to getting a sinus infection I get the chunkies more frequently. I have no idea what to do either but the bad breath is awful! I'm also having to constantly chew gum!
I thought I was alone in this so I'm glad others have the same problem.