<s>[INST] I fell down my stairs two weeks ago and had a tramatic brain injury and cannot walk with out a walker.  I just got sent home from rehab because of insurance.  I have terrible headache that pain pill do not help and now when I cough I am seeing some blood in my phlegm. [/INST] Thanks for your question on Health Care Magic. I can understand your concern. No direct connection between head injury and hemoptysis (blood in sputum). But unknowingly, you might have injured chest (blunt chest trauma) while falling from stairs. And this might have injured lungs and cause bleeding. So better to get done chest x ray to rule out lung injury as a cause for your hemoptysis. Your headache is mostly due to head injury. So consult doctor and get done chest x ray. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>