After covid,for past 8 months I m suffering with left nose blocks and I feel mucus is stuck behind tragus ,when I try to spit phlegm I feel it is coming some where from ear,   external ear canal and ear inflammation ,when intake of deep breath I feel inflammation in ear canal, and pain pass through left side chest, the pain is existing daily for past 8 months, whenever I take head baths I feel the pain is increasing more, I went so many ENT doctors but no one finds what cause this, what problem I m going through..