Is there pain in your lung when you breath when you have lung cancer?

My back hurts, under my shoulder blade each time I take a deep breath, I was wondering if it is muscular or possible lung cancer.

you could have a pneumothorax, you need to see your dr. or go to the er.look up the meaning of pneumothorax. IT IS NOT CANCER

Whatever it may be, lungs are very delicate organs, and any sort of pain or anything in them should be examined immediately. It doesn't matter what it is, whether it be cancer or any number of other things, you should seek professional medical help from your local physician immediately.