Thanks for your question on Healthcare Magic.
I can understand your concern.
Since you are active smoker, we must rule out heart diseases like Coronary
artery disease (CAD) and lung disease like
bronchitis in your case for your symptoms .
So immediately consult emergency room and get done
1. Ecg and 2d echo to rule out heart diseases.
2. Clinical examination of respiratory system and PFT (pulmonary function test) for the diagnosis of bronchitis.
You will need cardiac supportive drugs, inhaled
bronchodilator and inhaled
corticosteroids (ICS) on the basis of these reports.
In any case,
smoking cessation should be done first.
So don't wait at home, immediately consult ER and start appropriate treatment.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.