I am a 21-year-old female (non-smoker). I have had a dry cough for about a year, increased fatigue, tachycardia and dyspnea on exertion. A few days ago I got a slight cold, nothing too bad. But the cough got worse, and I had an episode of hemoptysis (no mucus, just bright red blood) and some chest pain. I tested negative for TB about a month ago. What could this be?