After reading your message, I think you have a simple problem of inner ear called Positional Vertigo. It is not a serious problem. It will be cured with medicine, some exercise for it. Exercise can be learn from ENT specialist. One more tablet you can take - Tab. Stemetil, twice a day.
Next Steps
if no improvement, visit near by ENT specialist who will do some head Manauver, if required and he will guide you some exercise for vertigo.
Health Tips
take bed rest.