Gumagamit din ako ng OPK sis, at totoo talaga na tumutulong siya! Basically sinusukat mo kung kailan ka ovulating kaya alam mo exactly kung kailan best time for intercourse, and a lot of us moms found it really helpful when we were trying to conceive. Maraming friends ko rin ang nag-try and successful naman, pero honestly the key din ay consistent timing at healthy lifestyle while using it. Goodluck sa baby-making journey mo, sending baby dust!