Taking a deep breath i get pain in my left shoulder+lung this has been happening on and off for years every few months for a couple of days at a time?

Cotochondritis: Is a benign inflammation of the costal cartilage, which is a length of cartilage which connects each rib, except the eleventh and twelfth, to the sternum. It causes pain in the chest that can be reproduced by pressing on the affected area between the ribs. This pain can be excruciating, especially after rigorous exercise. While it can be extremely painful, it is considered to be abenign