Motor vehicle accident: When to call
  Call 911 if: 
  - You passed out (lost consciousness).
  
  Call your doctor now or seek immediate medical care if:
  - You have new or worse belly pain.
  - You have new or worse trouble breathing.
  - You have new or worse head pain.
  - You have new pain, or your pain gets worse.
  - You have new symptoms, such as numbness or vomiting.
  
 Watch closely for changes in your health, and be sure to contact your doctor if:
  - You are not getting better as expected.