Vertigo -getting worse. On what to do?

Hi , I had been in an accident lately and was required to take bed rest for several days. Vertigo suddenly occured to me one night , as i woke up in the middle of the night vomiting. Dizziness occurs if i tilt head to left or right while lying down , standing up and walking was fine. Parents rushed me to Emergency Room of a popular hospital ,they gave an injection , IV and vertin tabs. They also took an Mri which came back normal. After takin vertin for about 2 days and mostly lying in bed the condition subsided , but after 2 days came back spontaneously during sleep. I tied epley manuer for right year and made it worse now i can't even sit up without getting dizzy. Still takin vertin 16 mg. Could you please advice on what to do?