Welcome to HealthcareMagic forum.
The symptoms you describe is typically caused by positional vertigo
- a condition which is related to vestibular system
in your ear.
I would suggest you to consult an ENT specialist
if you haven't seen one yet. You would need careful examination of you ear, test like audiogram / Dix Hallpike's test to confirm the cause. Vestibular exercises will help you in the long term.
Wish you good luck and speedy recovery.