If you have been injured in a motor vehicle accident, you should see a doctor right away. First, you should see a doctor for your own well-being. You may not be able to discern the extent of your injuries yourself; a small ache could be something significant, or it could be nothing at all. Only a doctor can tell you for sure. Second, you should see a doctor because if you decide to bring a legal claim against the at-fault driver or another party, you will need documentation of your injuries and what you did to fix them.