Thanks for your question on Health Care Magic.
I can understand your concern.
By your history and description, possibility of
bronchitis is high in your case.
Bronchitis is common in smokers.
So better to get done clinical examination of respiratory system, chest
x ray and PFT (Pulmonary Function Test).
Chest x ray is needed to rule out
lung infection.
PFT is needed for the diagnosis of bronchitis.
It will also tell you about severity of the disease and treatment of bronchitis is based on severity only.
You may need inhaled bronchodilators, antihistamine and anti inflammatory drugs.
Since all these drugs are prescribed medicines, you need to
consult doctor.
So first diagnose yourself and then start appropriate treatment.
Hope I have solved your query.
Wish you good health. Thanks.