See a doctor: Coughing up blood is not a good thing. Many things can cause this. If you have had a cold with frequent coughing, you may see some blood tinged phlegm but that is usually from irritation. If there is a history of night sweats, weight loss and/or fever i might be concerned for tuberculosis. Please see your doctor immediately if this fits what you have been experiencing.
Answered 5/20/2015
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