Dear friend, welcome to HCM.
if your CT scan
of the head was normal, it is not serious and represents a concussion
( blunt) trauma to the brain, a kind of shock
it will resolve in most cases in a few days.
an anti emetic and a pain killer prescribed by your doctor would help you till then.
if it persists, it warrants a re-visit your doctor to look for a contusion
(on a MRI
) or delayed complication, if any.
wish you get well soon .
take care and keep me posted on your progress !
pl. rate this answer before you log out satisfied.