Hello, You havent mentioned other features associated with the chronic cough. Those are whether you have fever, chest tightning, loss of appetite and weight loss . Since you are having cough for sometime we cant exclude chronic infective causes like tuberculosis just by history. Ineed to do blood investigations on you like full blood count ESR,CRP. I need a chest x-ray also. If investigations are suspicious i might request to do sputum investigations also. Have you had a recent contact wi th a person who had chronic cough? You havnt mentioned your country. If your country is endemic for Tuberculosis and you are having other associated features alspc i It is a one possibility. You get this type long-term cough due to atypical pneumonias also. Depending on your investigations will come to the diagnosis. and if it is an atypical pneumonia i will prescribe you clarythromycin. You havent mentioned whether you are a smoker. Smoking also cause chronic cough and blood with sputum. Hope this helpss . thank you