Hi Stacey, firstly congratulations. I am a great believer in bringing up children with dogs. I was privileged to spent my entire life sharing with various breeds, and strongly believe that education is the key to a dog and child living in harmony.
Firstly I would NEVER recommend that you leave a baby alone with any dog, regardless of breed. If your dog is unused to having a child in the house a crying baby, could cause upset.
There is a particularly useful website which is awash with information regarding socialising your dog with children
Home It offers sensible advise and I feel sure you will find it extremely interesting.
Good luck.