 [ Symptoms ] i get hard small pieces of what i think is gunk that has hardened that come out of my mouth what is it  sinus allergies sore throat [ Disease ] i do not know i did not see it you did there are many possibilities but consider a tonsillith a tonsil stone that has dislodged you can find information about cryptic tonsils and tonsillitis on webmd ent board or by a webmd or google search