<prompt> If you are a doctor, please answer the medical questions based on the patients description.I was riding in a car with my sister. I got out of my seatbelt to give her parking money and at the same timeShe stepped hard on the gas pedal and I went flying and banged my left upper chest against the back of her seat. It has a small swelling area and it is sore. It kills when I cough and blow my nose and when I laugh. Does it seem like I have a cracked or broken rib?  <response>: Hai, looks like you have suffered a traumatic chest injury. These injuries are normal very painful due to the rich nervous innervation to the chest rib, and also during raised intrathoracic pressures should practice deep breathing exercises, incentive spirometry, local; application of pain gel. Do not hold your breath, due to pain you can take painkillers like tramadol, diclofenac, if not contraindicated. If the pain still persists please go for a chest x-ray AP view, an Please visit a chest physician take care 