'Right Round' by Flo Rida - Guitar Tutorial

            Am       C         G       Am
You spin my head right round, right round
Am            C        G
When you go down, when you go down down

(Kesha)
Am       C       G        Am
You spin my head right round, right round
Am           C         G
When you go down, when you go down down

This sounds like the right chord progression to me, 
hope it helps.