DIZZINESS AND NUMBNESS

A few weeks ago I started getting dizzy episodes and numbness in my face and head . I've been having these dizzy spells on and off for about 2 1/2 years now. Although lately they've been consitant and the numbess in my face and head is new. Within the last 2 years I've had 2 CT scans and 1 MRI done and the results came back negative. My doctor tells me not to worry. I should also note I had a car accident a few months before all these symptoms began a few years ago and suffered whiplash. I am wondering if anyone else has similiar symptoms that may possibly be related to a whiplash injury.

Any feedback would be appreciated.