Iam 34 old woman i smoke, have ache in upper back pain in shoulder down to elbow and sometimes to hand do you think its lung cancer?

It's possible: You should be seen by a health care professional, get interviewed, examined, and possibly have a chest x-ray. Lung cancer is rare at your age, but can occur. You should stop smoking. Please get professional help if you are unable to do it on your own.

NO: But you should quit smoking lung cancer is unusual at this age, but you should quit smoking now, please...