Report dosent seem to show any problem. There must be some local infection somewhere in ear/nose/throat. Visit an ent and ge tit examined

look ,ideally on appearence and on seeing the fnac report,it doesnt look any suspicious at all. it is better to wait rather than hurrying up. in the meantime get your ear nose ,throat and neck along with nasopharngeal area examined however if it is troubling you more than you can tolerate ,the final answer is excision biopsy which is the last answer