All these symptoms suggest that you might be suffering from upper respiratory tract
There is a connecting tract (known as Eustachian tube) between the nasopharynx
& middle ear through which infection can spread to ear.
Also obstruction to this Eustachian tube can lead to ear pain
by un-equalisation of pressure between the nasopharynx & middle ear.
The management consists of:
1. Antihistamines to provide symptomatic relief from cold & cough.
2. Expectorant & mucolytic
syrups to manage the productive cough.
3. Nasal decongestants to relieve ET tube obstruction.
4. Antibiotics (if viral cause is suspected)
5. Avoid smoking..it irritates the respiratory passage & predisposes to cough & cold.
So...it will be better to consult an ENT specialist
& start treatment.
Wishing you a speedy recovery.
Thanks & take care