No not at all honey,just let them know that you are on your period,shouldnt think you will need a pregnancy test either,others have posted that they have had a period on the day of surgery,it has not made any difference to them dont worry honey.
When you wake up with boobs honey,believe me nothing else will matter,its the most amazing experience ever, you wont be able to stop looking at them,keep us posted,you will be fine.So excited for you,xxx