For health reasons, you should always immediately go to an emergency room to have your condition fully evaluated. People are often in shock after an accident and may be unaware of all the serious whiplash and other injuries they have incurred. The X-rays and other tests run will also help us later document that all your current physical complaints and injuries were directly caused by the car accident. Waiting even a few days makes it easier for the other driver’s insurance company to claim that at least some of your current physical ailments may be due to another intervening event or accident – perhaps even one when you weren’t the driver.