My PC crashed and when I got back into Minecraft my world was gone. (No experimental features enabled)

My PC has crashed mysteriously like this before but I was never able to figure out the issue. It has never affected my games though, it would always just revert back to my last save. This time it crashed while I was in Minecraft. I knew what was happening so once the screen froze I just turned it off. Power on, open Minecraft, world isn't on the select list. I check in world files, 100% sure it's not there. Why the heck would this happen and is there anywhere I can get my world back?