Hi. I understand your concerns. it is better to get evaluated with a chest x ray to look for infection. also a pulmonary function test to look for any bronchitis. This would also be the best time to quit smoking as it is cause for many serious health issues like cancer.
Hope your questions were answered. Thanks.
Next Steps
Consult a pulmonologist for the same.
Health Tips
if you are from bangalore you can consult me at my clinic at hebbal kempapura. Details are given in practo.