You can check in the Recycle Bin but I am assuming you have done that already.
There are certain programs that allow you to recover files that you have accidentally deleted. I suggest you try Recuva https://www.piriform.com/recuva (the free trial is good enough).
This only applies if at any point you had saved the file. If you were just typing without saving it and closed the document, then you can't recover it. But since you said it was saved in your Documents folder this should recover the file. Edited by HippoSucks - 4 years ago