Welcome to HCM forum.
It does seem to be a severe respiratory tract
Please do not neglect your symptoms especially if there is any brown or coffee ground expectoration .
It might cause spread of infection to your lungs and needs prompt medical attention.
It might need a course of antibiotics along with supportive antiinflammatory drugs and mucolytics .
I would recommend you consult your doctor as soon as feasible for confirming the diagnosis and starting appropriate treatment .
Wishing you a speedy recovery.