Hello! The ear block feeling could be due to the edema(swelling) of the eustachian tube opening that is in the nasopharynx (behind the nose), resulting in reduced ventilation and drainage to the middle ear. It generally occurs at the time of upper respiratory infections. Nasal decongestants and valsalva manouvre will help. The cough could be due to the sinusitis leading to a post nasal drip. It would be better to know the duration of the symptoms and nature of cough from your side.