This past weekend, I noticed a lump in the back of my mouth, where the hard and soft palates meet on the left side. It is very hard, somewhat irritated, and has not changed size in the few days I have been aware of it. I also just started with pain in the left size of my throat. I have been having headaches for several months now on my left side of my head, eye pressure, and a fairly large (2.5cm) sinus cyst was found on the left side through a CAT scan. It feels like bone, it is so hard. Does anyone have any thoughts? Thanks in advance for your help!