Nervous to set up first appointment!

I am 5w2d and found out at 3w5d... I had a miscarriage in June and am just so scared in a way to set up my first appointment. I am wanting to go to a new doctor and I just keep pushing it till “tomorrow” to set it up. I just don’t want to set it up and then have to cancel... 😕 I pray for a sticky bean but, just so nervous!