I am 75 years old and have smoked for approx 60 years. In January I developed a chest infection while on a cruise and it took 3 courses of anti-biotics to clear it. Recently, I have noticed small amounts of blood in my sputum but to-day it is nearly all red. I assume I have a form of Haemotysis. What should I do and what would be the consequensis if I do nothing?