You may be asking "is everyone having problems with Facebook, or is it just me?"

The answer is "everyone is having problems tonight!"  You just breathed a sign of relief, didn't you?  If you're on a desktop, it's likely that you're having problems.  If you're using an app of on a tablet, Facebook doesn't seem to be affected.

Downforeveryoneorjustme.com says "It's not just you! Facebook.com looks down from here."

And CNET.com says:

Facebook is currently suffering an apparent disruption that is preventing many of its users from accessing the social network. 

While the mobile version of Facebook was available to smartphone and tablet users, users trying to visit the Web version Tuesday evening were greeted by the message that the page did not exist.

The outage appears to have begun around 6 p.m. PT, but it's unknown how many users might be affected. 

 
Facebook headquarters sign