Missing session/project

[Shane Irwin]

OK this is not the first time I've taken a few weeks off from recording, and come back, and my latest song is just missing. Gone. The media files are still visible in my hard driver folders. The project, or session itself is gone, and so are the two backups/saves I had.
My Pro Tools friend here in Nashville has no idea, and neither do I. I can't find any such thing online about this. I feel like the only person who's ever had this happen.
So I open up Pro Tools, and I WANT to select "recent" songs, but only a few of them show up from like last year. Not the couple versions of a song I was recently working on. This is hours upon hours of recording....gone. So frustrating.
I'm a pro photographer, and an occasional music guy, so I'm sorry I'm not super knowledgeable with my PT tech talk. I have a leaky brain.
Any ideas??