... I am 41 yrs old and have copd since i was 34 I am on oxygen at night because my o2 drops into the 70 range but for the last 3 wks when ive been coughing I have been tasting blood in my mouth could this be from a infection and should I go to my doctor. ... (2 replies)

... By the next morning, I was having problems breathing and had developed a cough. By the next day, the cough was somewhat painful and I did not like the sensation of not being able to breathe. ... (2 replies)