Hi.
Thanks for your query.
Read and understood your history and concerns,
cold and
cough followed by chocking of the ears, reduced hearing, you have to travel frequently.
Fortunately you are in Bangalore, you can certainly walk into ENT clinic to get a clinical evaluation, examination and get proper diagnosis and treatment.
You certainly will need an antibiotic, antihistamine and anti-inflammatory medicines.
The swelling in the right
nostril and difficulty in breathing in through the same right nose can be due to infection called furnculosis of the nose.
The same medicines will help for this too.
Try to avoid air travel till you get better or cured.
Instill decongestant nasal drops and followed by steam inhalations.