Nasal allergy or sinusitis. Wear mask.

Sinusitis

From your history it seems that you might have nasal allergy caused by dust/pollens/smoke. If the breathing difficulty aggravates after physical exertion and there is whistling sound specifically during expiration, there might be asthma as well. Chest pain might be from extra load of work of breathing by your chest muscles. If the breathing difficulty is purely nasal then it might either be from nasal congestion or deviated nasal septum or there might be any mass or polyp in the nasal cavity.

Hi . You might have deviation of septum and blockage of sinus called sinusitis.

Hello, from your history consistent breathing problem from nose and mucus in throat may indicate deviated nasal septum or sinusitis.

Tab mucinac ab