[SOLVED] OMG! My blog disappeared!

I made an adjustment to the categories (trying to input text into category bar and put it above the main menu bar, neither of which I've succeeded at), and then I checked my site to see if the changes were made, and the whole page is gone. It seems to go to the proper URL, but nothing is there!

And in the Categories window, it appears that there are two categories, both called 'Name'.

Any suggestions for getting my site back?