It happens. You create an awesome page, then you accidentally delete it. Not to worry, there is a chance to recover it!
1. To the right of your page layout click Add Page.
2. Select My Pages on the top of the list, and "Deleted Pages" in the "Show" dropdown list at the bottom.
4. Find the page spread you are looking for and drag it to the location you wish it to be in the layout.
5. The page will appear in that location!