For last 2 month when I spit occasionally its pink or eve tinge of red is in the saliva and tastes like blood. I It happens only occasionally. I don't have a cough. No loss of appetite. I do smoke but not a heavy smoker only 1-2 cigs a day. Sometimes it feels like throat is choked. And sometimes feel a very mild dull pain on right hand side of chest. The symptoms are not severe though. I have severe gastric problem. Please help me understand whats causing this red tinge in saliva and what can be done about this. Please advise.