Hi,
Getting black stuff in sputum is most probably due to your
smoking habit and needs to be curbed.
Blood in sputum or in
vomiting should be taken very seriously unless proved otherwise.
Hence I would advise you the following:
Consult your Doctor for preliminary examination and have investigations of blood, X-ray chest, CT scan of chest if needed, Upper GI
Endoscopy as minimum investigations to know the cause.
Also send sputum for lab test to find out gram staining, AFB staining for
tuberculosis, culture and sensitivity which may help in diagnosis and proper further management in the form of proper medications.
IF this is due to cancer then you need to consult a Cancer specialist, have further investigations and proper management.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. T. Chandrakant,
General Surgeon.