Sore arse, sore wrists, feeling wobbly, sore palms, aching back, nerves about not being able to touch the ground when on the saddle etc, all things people tend to go through, they usually pass as you get used to riding and if they don't then you can be sure it is a fitting or component choice issue. There is no point in getting a proper fit until you have done some riding and can feedback to the fitter as they make adjustments, in my opinion.
I have never had a pro fit (I had a basic fit when I bought my 1st road bike), I fit myself using a rather elaborate method using a turbo trainer, brightly coloured stickers and a camera (actually 2 cameras) + video analysis software. So my opinion is limited! No doubt someone could fit me better, but I like doing it my way because I can take as long as I want and make incremental changes. I can also make a change then analyse it over a legitimate training session to see any knock on impacts.