Why don't I get Facebook notifications anymore?

[Im]

So I've had my Facebook for a few years, but now it says I don't have ANY notifications, like not any not ever... and its been acting weird lately like its making old notifications new and highlighting them over and over again... has anyone else had similar problems? i think Facebook thinks my account is brand new or something? because you can't delete or clear your notifications can you? because thats what happened and I know i had like, 5 notifications but now its all cleared.. please help!

[Yuuuup]

Check your notification settings. Click Edit next to the notification types you want to receive and make sure the appropriate boxes are checked.