Hi Doctor, I have pain in my lower right lung. I am non smoker. Breathing is fine. No blood in cough. There is no weight loss. What can it be. Can?

Pleurisy. Could be pleurisy which is essentially pain with breathing. Numerous causes-sometimes unable to isolate cause. Could be musculoskeletal which cause more symptoms with movement. Could try OTC analgesics/ application of heat/cold compresses. If no improvement in 36-48h or if symptoms worsen, see your doctor.