If you're on Windows 10, try going to "Backup and Restore". It could very well have backed up your latest works, but you have to tell it to retrieve them by doing a "restore". I think there is an option to restore to somewhere else other than the original location. That way you don't overwrite your newer stuff.
Using Windows 10, you can set up a task in the task manager to do an immediate backup whenever you insert an external USB drive.
I have my Linux machine set to do an incremental backup every 4 hours to an internal 2Tb drive.
Bill