Some mornings i taste blood in mouth and when i spit there is a little blood in spit but only in mornings by mid morning it's clear. previous smoker but more social than everyday.quit 13.5 years ago.pollen is real bad here. could this be lung cancer?

Blood in mouth: Before worrying about cancer I would worry about gum disease or swallowed blood from your nose because of bad allergies Once the bleeding tissue is resolved I would then investigate the possibility of lung cancer.However, gum disease would be my major concern

Cancer screening: A chest radiograph is suggested and a sample for your sputum may be sent for analysis, including cytology, AFB smear and culture and bacterial culture. If you have nasal congestion, a nasal source, is another possible causes. Rinse nasal passages and take an antihistamine for possible relief. I agree that you should also have a check of your gums by your dentist.