Thank you ,
I assure you that you donot have a serious brain injury
, based upon the symptoms that you have posted. In view of persistance of symptoms my advise will be to get a CT scan
of brain witjh bone window and if comes as normal that will rule out barin injury. If the CT head is normal, you may have to take analgesics for few days.
Donot wory much, it seems unlike that you have major brain injury
hope this will help you
Avoid excessive alcoholism