Hi Paul, did mine in July, was just the same as you. I knew I could do everything well enough, but it didn't stop me being apprehensive, plus I'd already cancelled two that week because of the weather, which is something you have to think about and is part of the test really.
Come the day and I wondered what I'd been bothered about. Everything went well, not swimmingly well, I made a slight nav error which I recovered from and I was so knackered at the end that my glide circuit wasn't brilliant but I passed no problem. You will be tired when you get out, don't plan on doing anything for the rest of the day! Well, other than the obligatory celebration beers.
Good luck and let us know how you got on.!