This is because the body is in shock mode and may not feel the pain immediately. Yet if you decide to go to the doctor he will be able to check you out and give you a proper examination. You may need to undergo testing or you may be told to just rest up and recuperate. If you have been given the all clear by your doctor or specialist then he may say to rest and take it easy for anything between one and two weeks.
It is for the sole reason that your body can recover from the battering it has taken. You may need to undergo further testing on the brain and an MRI scan. This is to detect any brain injuries or whether or not you have done any damage to your temple region. This could be dangerous as it could lead to several serious situations that you should certainly want to avoid.