Oh, I used to have a similar problem. I had to see a psychologist for almost 3 months in order to get rid of this (I thought too much about unnecessary things)
Hey, why don't you just trust your specialist? She said everything was going to be fine, so I don't think you should worry. You will succeed, good luck! I really understand you, because this is a very exciting process, but I hope that in the end you will calm down and not worry about it. To be...