Please click on File > Open Recent > Choose your last Catalog.
Let me know if it helps.
I should have mentioned that I tried that too. When I click on file open recent there is only the catalog I accidentally created available....
Try searching in your computer by " .lrcat " and check for the results .
Also if you have not changed the default location of Lightroom Catalog, it should be in the Pictures Folder, try checking it there.
Use your operating system's search feature to search for all files on all hard disks whose name ends with .LRCAT, then double-click on each one found to find the catalog you want.
Thank you! The catalog was buried in pictures>Lightroom>backups>. Good thing I did a back up yesterday!
Thank you both again!
You are Welcome, Glad we could help.
If this or another post helps resolve your issue, please take a moment to come back to this discussion and mark the post as Correct or Helpful. Doing so greatly benefits your fellow users.