On the front page of your blog I see a post that was published today Aug 23 2012. As that post lacks a title I assume you went to the front page of wordpress.com and used the "New Post" there. That's too bad because those vare only Asides that lack titles and cannot have categories assigned to them and that there is no backup of.
Aside – These are brief snippets of text that aren’t quite whole blog posts. Useful for quick thoughts and anecdotes http://en.support.wordpress.com/posts/post-formats/
I advise you to start logging into your own blog by using this link > http://thependulumswings.org/wp- admin and then use the Add New to create a post in your dashboard > Posts > Add New
If you do create posts in your own dashboard then there are backups of earlier post revisions automatically created by the software. If you lose a post or page that has been created in your own dashbaord you can recover it. This is how you do that.
Go to Posts > All Posts, hover over the title of the post, click Edit and check the Post Revisions module for previous saved versions of the post.
If you're not seeing the Revisions module while on the editor screen, click Screen Options (top right corner of your Admin page) http://en.support.wordpress.com/screen-options/ to activate it. Then select the post and page modules to include them. http://en.support.wordpress.com/modules/#list-of-modules Then you ought to be able to go here > Dashboard > All Posts > Posts and locate the post and recover it from post revisions.
If you cannot locate the post for locating and restoring a post revision, and it's not in your Trash folder http://en.support.wordpress.com/trash/ then you will not be able to recover it. http://en.support.wordpress.com/trash/#restoring-from-trash
When you start a new post, add the title, set it to private and then publish it. When you are done with the post, set it back to publish and update it. The problem with posts disappearing when saved as a draft has been around for a while, but only seems to hit a small number of people randomly.
The other choice is to get and use an offline blog client such as Windows Live Writer (Windows) or Ecto (Mac) and then everything is saved on your computer and when you are done with the post, you actually publish it directly from the blog client software. See here for offline blog editors so you don't have to go through this again http://en.support.wordpress.com/xml-rpc