Lost document from Macbook

Hi, I’m wondering if anyone could help..

I was working on an important document on Microsoft Word this morning, and my Mac crashed so I turned it back on, and the document disappeared. All of the other windows I was working on restarted automatically except for my document. I’ve tried various methods to recover my document, but to no avail. I can’t even find it on Time Machine.

I had auto save turned on so I thought it would have saved, but I can’t find it. Any advice to retrieve this document? Thanks