my mom has vertigo, and it is excruciating. :( apparently there isnt really a cure, but i know that there is medication you can take, whether or not it helps you right away.... i dont know.
talk to your doctor. if your doc doesnt seem to know what to do, go to another doctor or ask for a referral. my mom has said that it has something to do with the little "rocks" in your ears, i think they are actually a bone, but she has called them rocks... somehow they get out of place or something, and it causes dizziness... if you sit on your bed and drop yourself onto your pillow (as if you were passing out) or even throw yourself down on your pillow, first on one side then on the other, sometimes you can get those rocks back into place. it doesnt always work, and depending on the cause and the reason why you are getting this, it might not have anything to do with it.
also my mom has a certain type of disease that causes hers. medication doesnt really help, she ends up in bed the whole day. her doc has told her that it could cause her to become deaf in the future.
so i would really talk to your doctor, the sooner the better. a friend of mine also has a mom with this, and it has even struck her on the side of the road, so please be careful. its one of the most frustrating things i have ever heard of. it doesnt sound like something that hits so fast that one couldnt pull over, but then what do you do, you know? so i hope that yours is a more mild thing that medication can help with.
im so sorry that anyone has to go through this. i really understand how you feel. its just plain aweful.