First, call the police. Wait at the scene for the New Orleans Police Department or the Louisiana State Police to arrive and secure the area. Cooperate with the investigating officer and exchange contact and insurance information with the other driver, but keep your comments brief. Don't talk about fault for the accident or discuss your injuries.
Get medical attention as soon as possible, even if you feel okay. You can go to your doctor or go to the emergency room at a local hospital like University Medical Center New Orleans. Then, contact an experienced car accident attorney as soon as possible, ideally before you even notify your insurance company.