Today, when I was updating a page of my wordpress blog, when I published all the content disappeared and the page was empty. I lost all the content that I’ve been writing for months.
I already googled it and some people talked about a setting on the bottom of the edit page/post. The thing is that I don’t see that section when I edit the page with the problem, nor all the other posts/pages.
The “setting on the bottom of the edit page/post” you’re probably talking about is the Revisions module. If you can’t see that on your page editor screen, click Screen Options (top right) to activate it.