Ouch, that is harsh! But that is odd that nothing saved. Just incase, did you look to make sure you didn't have a different directory selected as the path for the render? I remember once I had selected the wrong directory and couldn't find my completed render so I didn't think it saved. Infact I saved it under the name of a past render overwriting that picture in a different dir. Take a look at the render options and/or do a search for the file name, it might be somewhere else by mistake. That is a bummer!