Although your symptoms appear to be concussion
only ,as you did not have any loss of consciousness
or severe vomiting
or confusion,you must still be subjected for a MRI brain to look for any evidence of any intracranial injury.
Concussions are not life threatening but they behave differently in different people.
Some people recover in few days while others may take weeks or even months also.
Treament lies in proper rest and anti inflammatory pain killers only.
I hope it helps.