Yeah, definitely wait till a time when you feel is right.

But be sure to check out the responses others and myself gave on DigiTehk's introduction essay about fear and pre-flight anxiety. Its a very normal thing, and it's a powerful experience, so those fears are justified. But this experience is like an entire life compressed into minutes, you have to let go of fear to enjoy it, (because what would life be if you spent it fearing everything all the time), you have to accept the good and the bad and enjoy every minute of it that you get.