Costochondritis usually has no apparent cause. Treatment focuses on easing your pain while you wait for the condition to improve on its own, which can take several weeks or longer. Costochondritis usually goes away on its own, although it might last for several weeks or longer. Treatment focuses on pain relief. Over-the-counter nonsteroidal anti-inflammatory drugs pain relievers. Heat or ice. Try placing hot compresses or a heating pad on the painful area several times a day. Keep the heat on a low setting. Ice also might be helpful. Rest. Avoid activities that make your pain worse. Consult Orthopedician for further evaluation...

It looks more like a muscle spasm vs costochondritis. Homoeopathy works well with the given modalities of pain.