Unreal Engine crashed but did not return to previous save after re opening

I’ve been saving my project somewhat regularly, every 20 minutes or so, but after a crash I opened Unreal Engine and it returned to the state of my project nearly 2 1/2 or 3 hours ago and I lost a good deal of tedious work. I’ve been saving manually, not automatically. I assume that since I clicked “save” the more recent versions should be somewhere?