To scared to try (july 2012)

So as I said we are starting the fertility process again, I went to the doctor in June, it is now August , and I have yet to go get the tests done I am supposed to. Why you may wonder? I was wondering why I always seem to come up with an excuse, and so I will admit, I am scared. I am terrified that it won't work, I am terrified of the pain of hoping. I am scared of every aspect of the emotions that I will feel. But I want this so badly, so it is a matter of does the fear out way the desire? I am searching for the balance and I hope to find it soon, I am just so scared.