try to get another ENT specialists, my sister got allergies on polllens when she was in elementary and it got worse in her high school days, she breaths through her mouth when she sleeps,she even had asthma that made her look even more pity, Her then boss got well with the same situation by suction. Just 2 years ago, my sister went to a very good doctor, it was her growing polyps in her nose that made her suffer. after the operation, it was not cancerous and she breaths comfortably with her nose now. The same with my co-employee who undergo the same operation just this week.
I dunno, I keep my room, where I spend most of my time (since I live in a sorority house) very allergen free and I have lived here for two years. I thought about it but kind of ruled it out..
yeah man i think it can be a really bad virus maybe theres somthing in ur house that ur really allergic to ?