Hi Dear , As per your query you have pain in chest after an accident . Well there can be many reasons for symptoms you mention in query . But it seems to me that the symptoms in your case occur due to injury in rib cage or any sogt structure inside rib cage . sometimes post trauma the membrane covering the lungs can get thickened due to blood or other injury related fibrosis or thickening. So when this happens there can be sharp pains with movement of rib cage . Fracture of ribs can also be one of the reasons . Beside that the chest pain can also occur due to heart problems like angina . So i would suggest you to consult orthopedic surgeon to confirm the diagnosis and rule out condition like heart disease . Doctor may order x-ray and will examine physically . Doctor may ask you to restrict your movement and prescribe muscle relaxant along with anti inflammatory . Doctor may also recommend physical therapy and may refer you to cardiologist . For now take proper rest , take ibuprofen or acetaminophen for pain and apply warm compresses to chest . Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari