Cov ntaub qhwv lub cev, lossis cov ntaub qhwv yooj yim, (tseem hu ua cov ntaub so ntswg huv, cov phuam so huv, cov ntaub so ntswg poj niam lossis cov ntaub so huv huv) yog cov khoom siv nqus tau los ntawm cov poj niam hauv lawv cov ris tsho hauv qab thaum coj khaub ncaws, los ntshav tom qab yug menyuam, rov zoo los ntawm kev phais gynecologic, ntsib kev nchuav menyuam lossis rho menyuam, lossis lwm qhov xwm txheej uas yuav tsum tau nqus cov ntshav los ntawm qhov chaw mos.Cov khaub ncaws hnav khaub ncaws yog ib yam khoom siv cev khaub ncaws hnav uas hnav sab nraud, tsis zoo li tampons thiab cov khob coj khaub ncaws, uas hnav hauv qhov chaw mos.Cov ntaub qhwv feem ntau hloov pauv los ntawm kev rub tawm ntawm lub ris thiab panties, tshem tawm cov ntaub qhwv qub, muab cov tshiab rau sab hauv ntawm lub panties thiab rub lawv rov qab.Pads raug pom zoo kom hloov txhua 3-4 teev kom tsis txhob muaj cov kab mob uas tuaj yeem ua rau cov ntshav, lub sijhawm no kuj yuav txawv nyob ntawm seb hom hnav, ntws, thiab lub sijhawm hnav.