I bought Fallout new vegas ultimate edition for like $36 on amazon, it just arrived today and is only disc 1 and simply new vegas..is this accident or am I ripped off?..everything I've read says I need disc two..so..what do I do?

You got ripped off.

yes the game is supposed to come with 2 discs one regular new vegas and the other has all the add ons, on it.\