 [ Symptoms ] i have a pea size white spot on the back of my throat it has been there for at least 6 months right of my tonsil [ Disease ] as you know since i cannot see it first hand i cannot offer you a definitive answer i do not know anything about you or your medical history so i suggest that you show this spot to a medical professional it has been there six months now so this would be advisable as a guess you may want to look up tonsilliths these are accumulations of food and other debris that can be trapped in tonsillar tissue