Thanks for writing your query.
After reading your post, it seems that you had suffered from concussion injury
as a result of the head injury
It takes few weeks for full recovery. As you have mentioned that the pain and swelling has decreased, it indicates that it is towards recovery.
can result in concussion injury. I would suggest that you should still get yourself clinically examined and investigated properly.
You should get a scan of your head and neck done.
Complete rest will speed up the recovery.
Avoid watching television/computer and text messaging till complete recovery.
I hope this is helpful to you.