Hi,
Thank you for posting your query.
I have noted your symptoms. First of all, I would like to reassure you that there is no need to worry, as your symptoms do not suggest any serious 
brain injury.
Your passing out could be due to syncope (on account of reduced blood flow to brain related to 
severe pain).
Your current symptoms are part of 
concussion and you would get better in a few days.
As of now, you can take symptomatic treatment with ibuprofen (for headache) and 
betahistine (for 
dizziness).
I hope my reply has helped you.
I would be pleased to answer, if you have any follow up queries or if you require any further information.     
Best wishes,
Dr Sudhir Kumar MD (Internal Medicine), DM (Neurology)
Senior Consultant Neurologist
Apollo Hospitals, Hyderabad,
For DIRECT QUERY to me:  http://bit.ly/Dr-Sudhir-kumar 
My blog: http://bestneurodoctor.blogspot.com/