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Yes, most likely, you have bronchitis. But it would help if you did sputum microscopy. Please answer the following:
1) What is your age?
2) Do you smoke? If yes, how many packs a day and since when are you smoking?
3) Is the cough more at night and wakes you up from sleep?
4) Do you have any fever or a sore throat?
5) What are the names and compositions of medicines your doctor has prescribed you?
6) Where do you work? Is there any pollution in your workplace?