31/m (smoke+drink and heartburn some time) spitting up blood since 5 days in the morning when gargle with betadine. Please tell me the cause? Paranoid

See a doctor. Spitting blood is something that needs to be evaluated. Even if you are afraid and paranoid, it is important to take care of yourself. They will do the proper tests and let you know what is wrong. Better safe than sorry. Your heavy drinking may be catching up with you.