Picking up more than one sheet of paper every time!

Hi - even though my document is only 1 page and I have selected 'only this page' on the print menu the printer then prints my page and gives me 2 blank pages! I have checked rollers, checked paper, reloaded paper, checked all settings - what am I missing?? Its driving me nuts and wasting time when I have over 50 letters to get out to members!!