Custom Fields for Contacts not showing in views

Custom Fields for Contacts not showing in views

I have a number of custom fields under Contacts.  This morning, none of the custom fields are showing.  They were there yesterday.  When I go to Setup>Customization>Contacts, I see all of my custom fields listed, however, when I go directly to a Contact record, the fields are missing, and when I run my report, although the custom fields are listed under the filter options, the fields all come up empty.
What has happened?  How can I get that information back?
Help!
-Yvette Fitch
Sookbox LLC