I edited a few pages on my Website, but when I left the editing page, none of the changes had been saved; I clicked the 'save' button before I left.

Your site is a Website Wizard creation. Saving is not sufficient. That only updates the Wizard's database. However, when you are in the editor area, you should at least be able to preview your pages before they are published. To update your web site files you need to use the "publish" option. Then make sure you force a browser refresh (F5).