If i cover belly button piercing with sealed waterproof bandaid is it okay to go in a pool?

i just got my piercing today! but for work i HAVE to go in the pool, since im a councilor at the Y. help! ill be wearing a one piece, do you think if i put one of those sealed waterproof bandaids under neath it and no water goes in the piercing ill be okay!? the guy told me amonth but i forgot to ask about my idea.... helphelp!