Thanks for asking this question, from our point of view there are two major chest injuries, blunt and penetrating. There are motor vehicle accidents leading to blunt chest trauma that is more than 80% of cases. Due to crush, falls, violent acts, blast and sports injuries will lead to blunt chest trauma. Any way almost all accidental injuries related with this, Along with chest radiography we can diagnose the blunt chest injury. Taking an X-ray should help to analysis chest trauma the patients who are suspected. I seem you had affected with an elementary chest trauma due to fall. Perhaps the pain that you have experienced now is due to the activities of under lying soft tissues and intercostal muscles injury. Another one is intercostal neuralgia caused by the intercostal nerves which are located among the ribs will cause direct injury or spasm of muscles. There is possibility to cure itself or need proper treatment. We can heals the injury by using the cautious treatments like anti-inflammatory medication such as Aleve, Motrin etc., B complex vitamin and massage this may works slowly.