I wanted to know if anyone has had this happen to them before. It started out with the night sweats for a week, but I was feeling normal besides that. Then I started to feel really tired and I coughed up blood one night. I always cough up blood around 6pm-7pm when I sit or lay down in bed but I don't cough up blood often, maybe once every 2 years. It is never in the morning, always evening. I have coughed up blood in the past which was pure and thin. Day one was thick and pure blood. Over the next 6 days, I coughed up blood always around the 6pm time but the blood did thin out to pure blood. The rest of the time I just had streaked blood mucus. During this 6 days, I was so tired, I didn't even want to move. On day 5 of coughing up blood, I started to feel fuzzy, like a light buzz when you first have a drink of alcohol. Doctor called me in some Bactrim antibiotic, and I started some vitamin K. Bleeding stopped and hasn't come back. This was about 3 weeks ago. I called doctors office to see what was in the sputum sample. They said staph but not MRSA staph, they said the milder staph. They also said a very small amount of yeast. Not sure what that means. I do not know everything about CF because I have always had a mild case and wasn't dx until 15. I asked about MAC, but they said results take longer for that. I also had a yeast infection start right before I started coughing up blood. Any advice? Explanations ? I've coughed up blood for one day, but never 6 straight. I cultured MAC in a prior sample but I am not consistent enough with going to the doctor to know if the MAC is for sure in my lungs. Doctor said it takes 3 positive tests that are done within a certain close time. I want to add that my lung function was at my baseline when this was happening, which is fev1 78-79%.