When I configured my WordPress, the WordPress URL and Site Address URL were different, lets say my WordPress URL was
http://user99.com and my site address URL was
http://user99.com/blog but yesterday while experimenting something in General Settings, I made both the fields same by clearing the field meant for Site Address URL and inputting the Site Address URL as WordPress's URL.
Now all my previous posts, which were previously in the previous URL of site address were lost and when I go to that site, the it says the site can't be found. So is there any corrective action need to taken to recover my old posts?