I was able to get it back. I had no luck with "ls -a" but fortunately there was a hidden file in the same directory (a backup from saving) that I was able to restore
what a relief! Thanks for responding and trying to help r3sistance.
So, if you somehow find that your files randomly disappear, look under the "view" menu and click "Show hidden Files". There should be a backup file that has the same name (only differs by a "~" symbol at the very end). Simply rename the file and delete the "~".