26 M, When I cough I get green phlegm out, with some blackness, for past 6-7 days. Had a cough earlier with white mucus occasionally. No cough without phlegm. No fever, no fatigue, no congestion, though some vibration in upper chest and lower throat when breathing out forcefully from mouth from throat. Breathing normal. Good sleep. Coughing green phlegm many a times earlier, but now 4-5 times in a day specially in the morning after a hot drink. Smoker 3-4 Ciggs a day, started again 4 months back after 8 months break, previously 4 years same 3-4 a day.