Hello all, I just completed Fallout 3, the credits began to roll and I thought "Ooo I'll get to do some DLC after this", but nope, it just ended. I have the GOTY edition so I don't know why the story would suddenly come to a close, I can load a past save game however.

Did you make sure to install the second disc?
Did you make sure to check off the DLC in the "Data Files" section of the launcher?

Oh, turns out the problem WAS checking off the DLC, thanks for the help!