Nipple perlu cuci ke masa pregnant?

Hi mommies2 saye first time mommies2 perlu cuci ke nipple kita saye 29 weeks.n nipple ade putih n gatal2 ade tanya nurse ckp x perlu cuci tapi saye is konfius ,tadi bace dlm ni ckp nurse suruh cuci gune cotton bud.so kene biar atau cuci ni? Hehe