Hi @conchcreative,
I will be happy to take a look at your screenshot! If you could, please include the entire page (including the location bar at the top of your screen), however I absolutely believe you that there are no apps on there except calendars.
This means though that there would be no way for us to post items to your Facebook page because Facebook would block any posts from being made if there was not an approved app in that list. It could mean that someone is manually posting items or that there is some error going on with Facebook.