Hi. I am a 40 year old female who has smoked cigarettes for 20 years. I recently started having some back pain that I first attributed to a pulled muscle. However the pain spread and increased to the point that I could not inhale very deeply without it causing a severe stabbing type pain. During this time I also developed a persistent cough with a lot of phlegm . On day 3 I began coughing up blood. I then went to a doctor who did chest X-rays which were said to look fine. He gave me a 1000mg shot of Rocephin in the office and sent me home with cough syrup. That was a week ago. I am feeling better but am still coughing up blood which has me very concerned. Can you give me your opinion and or advice on my situation? Thank you in advance.