thanks for using healthcare magic
To clearly answer your question we need little more information - did you get un concious after the fall , was their any vomiting
, do you have head aches, do you have difficulty in vision ?
Your symptoms are suggestive of two possibilities -
1. Cranial nerve injury
- leading to arm weakness and difficulty in breathing (vagal nerve injury
- diaphramatic palsy
) , leading to carbon dioxide retension hence excessive sleepyness.
2. Possible small intracranial bleed leading to all the above symptoms.
Its better you get your self examined at the earliest and you may require CT scan
of head and neck region.
I hope you find my answer helpful