midwifematters5 on "Links to content in site all suddenly disappeared."

There are four links on the home page: Meet the Midwife, Locations, Pregnancy and Women's Health. When you click on those there should be a ton of links that you can click on for content. All the links disappeared at one time. On the specific page that should be linked, under page attributes they have the correct parent page listed but are not showing up so I don't know how to even fix them as they are correct. It must be some bug that turned off all the parent page links. I am really desperate to get this fixed. Is there a back-up of the site? If you can't help me could you suggest who could help me with this???
Thank you so much.
Karin