Hi MV and welcome!
Here is a thread on a similar subject that you might want to read through if you have not already.
https://www.healingwell.com/community/default.aspx?f=9&m=2844929
As you can see...you are not alone with these symptoms!
Have you tried any self-help relaxation and coping skills to lower your anxiety?
We have a great section in our Resources here on the main page (1st thread) that is filled with great anxiey management tips...check them out and give them a try.:)
Let us know how your test turn out...and feel free to post with us anytime.
Scaredy Cat