Nope, you're pretty much screwed.
The only way that can really happen though is if you enter an area, die, reload not your last save but the previous, then enter the zone again. The game doesn't write the same data onto two autosave slots; that has to be bad luck or bad planning on the part of the player - and, why yes, I have done exactly that in the past, how did you know?
Get in the habit of saving smarter. If you're going to go to a dangerous place, put a manual save right before you head to it. Then, quicksave after a bit, and finally quicksave again when the zone is relatively safe. Getting in the f5/f9 habit can really save you some heartache.