After week of flu, high fever and cough, I have started to cough up small pieces of tissue/flesh followed by fresh blood.

I'm a 28M and now is seventh day of this flu. Fever has subsided but the cough is still bad and my voice is coarse. After coughing up lot of blood day before yesterday, I went to see a doctor yesterday. Chest X-ray showed no inflammation in lungs so no treatment was suggested. The blood from coughs momentarily go away but I have noticed when I cough up a piece of tissue, then next coughs cough up lot of fresh blood. I have anxiety disorder and fear that this flu damages my vocal chords, lol.