Problem with menu & sub-menu

Hello:

Yesterday, one of our Main Menu items started to malfunction (it seems). On the last menu item (Get Involved) on the right side of the Main Menu, the sub-menu items and sub-sub-menu are not appearing correctly.

Here is how the last Main Menu item (far right side) appears.

Get Involved (Main Menu)
– Donate
– Social Media
– Facebook
– Twitter
(the items below should appear as sub-menu items of “Get Involved” and sub-menu items of Project 62 but instead go to the next line – which we do not want.
Project 62 (this non clickable menu item doesn’t even appear at all)
– Project 62 Western New York
– Project 62

This problem is only occurring on this last Main Menu item (and it just started to happen yesterday – as I noted above).

Our website address is: http://www.postpartumny.org

Thank you in advance for your assistance. I have attached a screen shot of our site too showing this problem.

Sonia Murdock
Postpartum Resource Center of New York
info@postpartumny.org