After you're involved in a collision, there are probably a million things running through your head. You could be concerned about the cost of repairs for your vehicle or worried about the state of the other driver or his or her passengers. Maybe you're worried that you need to explain the crash to your insurance company, or you are thinking about being late for work. While each of these things is important, one thing that you have to remember is that your body has just experienced a traumatic event. Even if you don't feel any pain now, that doesn't mean you're not injured.