Hi doctor, i have pain in my lower right lung since last 6 months. i am non smoker. breathing is fine. no blood in cough. is this lung cancer ?

At 29, not likely: Firstly, you know that you are having pain in the lower right side of your chest. What you don't know is whether that pain is in your lungs. Pain from internal organs may be referred to other places - like gall bladder inflammation may be felt as pain the right shoulder. Am more concerned about your fears of cancer than any real risk. See your doctor for assessment and perhaps counseling.