I am a 24 year old female, with no previous health problems... About 10 months ago, I woke up in the middle of the night because my chest was rattling, like it was full of mucus. I bent over the sink to cough it up, and it was pure, fresh blood. I was pregnant at the time, so I immediately went to the ER. They performed a chest X-Ray, blood, work and a CT scan.