Pages not displaying

I don’t think I’ve changed any settings, deleted any files, etc…and suddenly, my pages won’t display in my side bar. I’ve gone to my Manage>Pages page in my admin panel, but it won’t show any pages. If I click on “All pages” nothing displays and a msg says “No Pages found.” If I click on “Published (1)” It says the same thing although it’s recognizing that I do have one page published. I checked my database after adding a few other pages and everything is working fine there. I’ve re-uploaded the wp-admin file to my host, but nothing works. Any help is appreciated. Thanks!

P.S. I have checked the code in my sidebar.php file and every thing is good there too.