I quit smoking 2 weeks ago after 30 yrs. No coughing (!) and a little cranky. But upper back pain (not sharp) behind my shoulder blade. Is this normal?

Congratulations. So glad to hear that you are smoke free! the back pain is not likely related, especially since you are not coughing. Please get checked by a doc. Don't let it become a conscious or unconscious way to slip back into your old habit. You are getting better with each passing day. Peace and good health!