Just because it is the night before your paper is due and you are barely starting it does not mean that it is the end of your educational career. Just because you have never used the library search engine and it is 2AM does not mean that it is over either.
Librarians from all around are available to chat with at all times. Even though our library may be closed during the evening and our librarians and your professor will probably not respond to your email until the next day, there are librarians that can be reached. If you click on the CONTACT US tab on the main library website, you should notice a widget on the right hand side of the page that says ASK A LIBRARIAN. Just follow the instructions within and you will be on your way to speaking with a librarian to assist you.