Looking for MS Word help before I have a mental breakdown

Okay so I took a break from wedding stuff ALL week and thought I would take a stab at printing one invite to see how it comes out......
They give test sheets and stuff and tell me that I have to adjust the paper to be 5 1/2 wide by 8 1/2 high...okay did that.
Typed away and previewed....VERY NICE.........
hit print and the flippen invite prints on the right side of the page...its not in the center............
Anyone have any clue what Im doing wrong?

are you using a textbox or just typing it regularly?

make sure you check the margins and ensure that they are even on each side...

if you are using a textbox... right click it and go to 'layout' (i think) and there should be an option to center it!