blood in your phlegm always means "something" but that something isn't always serious. the respiratory and nasal tract has a rich blood supply. when you have a cold some of those tiny surface capillaries can bleed due to inflammation or infection. if the blood is minimal and goes away at the end of the cold it is probably just normal. coughing up blood for an extended period of time requires a thorough medical investigation. many people worry about this being a sign of a cancer but if you are a long-term smoker and have other medical symptoms not mentioned in your brief question you should bring this up to your medical provider -- someone who knows you and your medical history -- so that he can order the proper diagnostic tests to get to the source.
i have blood in my flim? does that mean anything? . i feel like i may be coming down with a cold. twice i spit out flim and it had blood in it. i'm wondering if that means anything.