Confluence 5.7 has reached end of life
Check out the [latest version] of the documentation
More about drafts:
Your drafts are listed on the Drafts tab of your user profile. To see your drafts, choose your profile picture at top right of the screen, then choose Drafts.
There are two ways to resume editing an unsaved page or blog post:
What happens if I'm editing the draft of a page that has since been updated?
Confluence will display a message informing you that you're editing an outdated page. If there are no conflicts between the two versions, Confluence will give you the option to Merge and Resume editing.
If there are conflicts, Confluence will give you the option to View the Conflict or to Discard your changes.
When you edit a page or blog post, you can view any 'unsaved' changes you've made since the last automatically saved draft, by clicking the Draft autosaved at message in the toolbar.
Screenshot: Segment of the unpublished changes window