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Do you have any other symptom? or past illness?Did you have any test?Did you consult doctor or take any measure?
How old are you?
Hello again,I was waiting for your reply.
I am sorry for your symptoms.Cough for such long period can be from a few causes.There can be a chronic infection.Allergy, asthma can cause it.Chronic bronchitis, emphysema, growth can be there.Sometimes, heart issues like failure may be associated with chronic cough.Yellow color is often from a bacterial infection.Brownish or blackish color can be from altered blood in sputum.I would suggest to take an examination by doctor.You can need a few tests like chest X ray, CT, sputum test, lung function tests. blood work etc.I hope this information helps.If there’s anything else I can do, please let me know.Wish your early recovery.Please rate my answer excellent if you are satisfied with it.Regards.