When did the vertigo start? Did you start a psych med that triggered some vertigo? If so, then you should definitely contact your psychiatrist. If not, then contact a doctor of some sort. You can either contact your regular GP/PCP or you can go to an urgent care center. Or the ER (depending on how bad it is).

I think CVS oftentimes has urgent care clinics inside their stores--"minute clinic" I think they're called. They're cheaper than a hospital service and you get help pretty fast similar to the ER. But if the vertigo is extremely bad, then go directly to the ER. Obviously you'll need someone to drive you, though. You shouldn't drive yourself.