If you have just been in an accident it's important to remain calm. If you are injured in any way, make sure you get checked out by the paramedics whom can determine whether you need any immediate care.
Do not sign any thing until you have had time to consult with your insurance agent or a lawyer.
Consult with your insurance agent on what coverage you have and what steps you need to take to get your vehicle repaired and get any health care expenses covered.
Consult with a physician. Studies have found that even in low impact, low vehicle damage accidents, sever injuries can occur and many times the symptoms do not show up for days to weeks.