Vertigo

It's confusing. I've been having problems lately but I'm not sure of the cause. About 6 months ago I fell and hit my head hard enough to make me pass out and forget the event. Since then I've been having trouble with dizziness if I get up or lay down too fast, once I got violently dizzy, almost to unconciousness, trying to work under the sink. A couple weeks ago I started a new med, tegretol, and it seems like I'm dizzy all the time and I get bad headaches. I dread the thought of lots of exams and I also dread the thought of going off one med and looking for another. I'm between a rock and a hard place and have to kiss a snake.