Hi I had a tonsil stone a few weeks ago, and I heard that they can grow back. But lately I have been having really bad allergies. A few days ago I noticed in the way far back part of my throat a pink/red fairly large Lump/puffiness, which does cause some discomfort( not serious pain), I have been gargling salt water, listerine, and sucking o ncough drops, but they only help for a few minutes. Any idea what this could be, what caused it, or what could i do to treat it (at home preferably)