If the maternity bag is ready, you've no reason to be nervous (other than if you think of the idea of you stuck on the M1 driving to the Rotunda!
)
After the big day, you're given 2 to 3 days to get the house clean, the shopping done, the baby room ready and mainly to get your head around the fact that your wife is soon coming home with the real king/queen of the house... easy.