Where can I find the autosaved file?

I worked all day with a file, at one point I even noticed in the command history “Autosaved succesfully” or something like that, so I did not save the file throughout the day, as ive been in front of the computer all of the time. It was only saved once at 09 this morning. Then at almost twelve tonight rhino crashed, and my file is gone. The only one I can find is from 09 a clock this morning. I have the “save every 20 min” checked. I checked the recycle bin and the autosave folder. Nowhere:( please help