Hi Gwen-

There's two things you can do. First, you can always access your blog…you just need to login at http://www.blogger.com and then you can access the admin and posting sections.

Second, if you want to get the top menu bar back you'll need to edit the template code. It's actually really easy. Just look for the read the below article and which will have you remove a section of code near the top of the template. Make sure to backup your template first in case you make a mistake.

Just do the opposite of this article and delete the Blogger Navbar .css from your code.