Try with mucolytics (such as Bromhexine
or ambroxyl) this will reduce the viscosity of the secretions and help in clearing of the secretions. Please, bear in mind this will take sometime for the block to get relieved if you are consistently doing steam inhalation and gentle blowing of the nose, as it is causing you trouble since very long. Meanwhile please get Impedance audiometry
and Pure tone audiometry done.
Dr. Naveen Kumar