Unfortunately, there is no way to recover if you do not have the backup catalog.
Have you gone back into LR and checked your edits? As far as I know, LR saves them to the catalogue as you make them, or shortly thereafter. Most of your edits ought to be there.
I did but it started me back to the original set up with nothing. I relaunched my backup from a couple days ago but the pictures were not uploaded yet.
Check your menu "/open/recent" list to make sure you are opening the correct catalog.