Thank you for posting your query.
You seem to have suffered a severe impact over the head due to the fall.
Since you had drowsiness
and headache is still going on, it is better to for you to undergo a CT scan
of the brain. It is possible that it may not show anything serious, but it is always safe to exclude a bleed or fracture
Dr Sudhir Kumar MD DM (Neurology)
Senior Consultant Neurologist