Hi, Lisa!
Not to worry!
You can add your Advanced Dining Reservations to your My Disney Experience using the confirmation number you were given when you made the phone call. There is a great post about
viewing existing Walt Disney World dining reservations online, so read through that post for more information.
Once you've added all of your reservations to your Disney account, you'll be able to view information about all of them right in one place. If you have a smart phone, be sure to download Disney's free app
My Disney Experience, too, because that will enable you to view these reservations right there on your phone. You'll have location, time, number in your party and confirmation numbers all right there in the "My Plans" section of the app. I've been relying on that during my last few trips to WDW, and it has been so much easier than writing it down or putting the details on a calendar by hand. Love this app!
If for some reason you still can't access your reservations online, call Disney Dining at (407) WDW-DINE and ask the Cast Member assisting you to check to be sure that your reservations are linked with a phone number. (I discovered that one or two of mine were not linked with a telephone number, so I would have been unable to access them online, too. A CM added my number and POOF I was able to see them online!)
Have a fantastic stay, Lisa! Be sure to send more questions as you think of them; we love to help!