Thank you very much for the useful information.
Okay this is not related directly to the trauma most likely. This can simply be a tension headache due to spasm of muscles in the scalp.
Work/relationship anxiety stress.
Take Tylenol or Motrin or a combination of both (depending upon the severity of pain).
Avoid caffeinated drinks.
Ideally this should settle down or improve in next 24 hours. In the absence of any warning symptoms (which i asked) this does not sound serious at all.
However, if you develop any or the warning symptoms, have this evaluated soon.
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