I am 27, I have smoked pot regulary since I was 18...for about 4 to 5, years I have been coughing up brown phlegm (primarily in the morning) which I knew was from smoking...I sleep in a room that has VERY VERY dry air in the winter time, and I've had a bloody nose a month ago, and off and on since then I've had a couple specs of blood in my mucus in the morning (maybe once every week or so)...well two days ago I coughed up two pinhead specs of blood in the morning after the phlegm, and TODAY I coughed up a what I would call microscopic spec of red that I can only assume was blood...could this be related to the dry air in my room, or should I be worried about something life-threating here....I have already made the decision to stop smoking