Ok, i've had some issues with my OS lately, and somewhere in the middle of this, i did this:

I dragged/dropped all my emails from my backup .pst file's inbox folder to my "new" one. About 5 hours later, my computer craps out somehow, and i have to reinstall the OS, and lose the "new" .pst file. However, the size of the original .pst file has not decreased, despite having the emails dragged/dropped out of it, and not appearing again.

Is there some way to recover those emails? It's only about a 100meg file, and the emails not extremely important, but i'd still like to keep them. But, if i can't recover them, so be it.