Believe it or not, no matter how bad the anxiety feels (I've been there more times than I care to remember), most of it can be managed without meds at all but it will require the help from a professional to get you there to learn the tools needed to stop it. An SSRI is a relatively new class of antidepressant such as Cipramil, Zoloft, Paxil etc. They are fantastic for killing anxiety if things are just too out of control.
There is a *must read* book you have to get by Claire Weekes called "Hope and Help for Your Nerves". Get this book asap. It will explain the anxiety process and give you the tools to rein in your mind.
I can imagine that having no diagnosis is also causing you a lot of fear but believe me you'll soon find out that it is inner ear related either because of VN, BPPV or migraine.
Also see this post on coping with anxiety: