Safari grayed out
Hello,
I just updated to Yosemite a few weeks ago, I'm on version 10.10.2. I went to clear my history and empty my cache in Safari and I noticed my preferences were shaded out gray and it won't allow me to do anything. About Safari and Quit Safari are also grayed out so I can't select them. Do I have a virus? Or does anyone know how I can fix this? If you could provide detailed directions that would be great, I'm a fairly basic Mac user! I really appreciate any help.
Thank you!
MacBook Pro, iOS 7.1.2