Unfortunately this is one of those "There's bad news and then there's really bad news" scenarios. There simply is no way to recover such data even if seemingly something is there. As bad as it so8unds, it would be a more productive use of your time to simpyl start over instead of hoping someoen can recover your work.
But before you start over: come up with a file saving and backup strategy. If you cannot remember to save files, install the plugin Autosaviour Free. It will remind you.
And then make backups. Lots of them. Save regularly. Don't rely on automatic things ever. But getting and running something like Time Machine (I don't know what could be run on a PC instead) won't hurt either.