I am v nervous

Yes, it is really that point in time, when you feel very tensed by passage of each and every moment. It's part of life that you got to live with, as for some this may be a new experience and for some they are a bit used to it. 

It would be easy for me to say, don't think about it, but we all have gone through these phases, just relax and remain calm and hope for the best.