It is understood that you didn't save a doc.
I know the same feeling, I once delted a test project and had to redo the whole thing.
It is a possibility that the O/S will not view it for, by default, some computers erase what the O/S deems 'Unneccessary space'
Although it happens, you still have the option to retain a file that you current erased.
You must realize, that everything that you erase, can be retrieved.
I would recommend a very 'low-curve' software called "Directory Snoop"
You can reach such a software by going to:
www.zdent.com/downloads
In the download box, write Directory Snoop.
Scroll down until you see it, then dl it.
I believe you will find the 'shareware' most useful.
Take care, and may you have a safe, and joyous Holiday!