<s>[INST] i have been spitting up blood every morning for the past month, even when i wake up from naps i spit blood.... but during the day my spit is clear..... i have a pain in my chest and feels like my right lung as well. can u tell me what it could be from [/INST] Cause of spitting up blood can be tuberculosis, bronchitis, pneumonia, bronchiectasis, and bronchogenic carcinoma. I will suggest u do a CT scan of chest with contrast.For temporary basis u can take tab Pause 500 mg thrice daily after food for 3 days.RegardsDR De </s>