You should be ok on your order, it will eventually show up online. I'm betting their web-site is very busy...
Also, you'll receive it ON November 3rd, which means they will ship it 1-2 days before that date, Your bank account will not be charged until it ships
I had the same issue after ordering my Series 3 Apple Watch a couple weeks ago. As already said, if you have a confirmation, u should be good, but it doesn't hurt to give them a ring.
I got my confirmation email at 2:58 est. Says shipped by Nov 3. Nice of Verizon to let us order a few minutes early. I couldn’t get on Apple site until 15 min later. Ordered silver 256
256GB Space Gray email confirmation at 3:10 AM (EST) Deliver by 11/03/17. Glad I got it when I did, because when I checked a few minutes ago this model delivery date is now 12/01. Now time for bed.
Just got off the phone with a customer service rep (took nearly 20 minutes to get them on the line). She gave me assurance that, based on my order, I should be receiving the phone on 11/3! Feeling good, tired and time to sack out!