Upon waking up from a nap or nights sleep I spit up blood about 5 times then it clears. What could it be? Its only when I wake up and when I blow my nose there is no blood and when I cough no blood.

The . The source of blood can be from the lungs (bronchitis, cancer), stomach or esophagus (ulcers, inflammation, or cancer), or upper respiratory (nose, sinuses, pharynx). You need to be seen by a physician who can help narrow the possibilities and get you to the appropriate specialist (e.g. Ent, pulmonologist, surgeon, radiologist) for diagnosis and treatment.