If you have an orange dot on your posts or page, it means there was an activity since your last login, it may be a new comment, media file upload, time change, or other actions that may have changed the post or page. You can see how it looks below.

If you have an orange dot on your posts or page, it means there was an activity since your last login, it may be a new comment, media file upload, time change, or other actions that may have changed the post or page. You can see how it looks below.