Sleep a turn over to feel dizzy, still disgusting vomit how to return a responsibility?

The doctor replied:

Hello, according to the situation you described, if you sleep, you will feel dizzy as soon as you turn over. Most of this situation is caused by the change of body position. Considering that it has a certain relationship with the ears, I think this situation should go to the hospital and ask the doctor to see it. This situation should belong to benign positional vertigo