Mbolin, I came across this when I was looking for something else. Thought I would post it here for you

http://www.brainline.org/content/201...in-injury.html
How to Stop Fumbling for the Right Word After a Brain Injury

Personally I think you did the right thing in going to the hospital.
I think everyone who hits their head badly enough to have a concussion should been seen by a doctor and if that means the ER than so be it.
Lots of things can happen after people hit their heads that sometimes need to be checked. One of those things is a rapid spike in BP. I could go on...