Where is my work? No autosave?PLEASE tell me this is not so!

I worked on a file over several hours yesterday. I did a lot of work on that 78 page document, but did not manually save. I assumed that like other programs I used in 2016, that it autosaved and I didn't give it a thought. In the middle of the night my laptop decided to update. I lost ever single edit I had made. This was a lot of work that I lost! Is there, but chance, someplace that this data could be stored but just not showing up?