Aiyo, OPK test hasil macam mana tu, ada dua line atau satu je? Kalau ada dua line yang sama kuat or second line lebih gelap dari control line, that means positive lah, ovulation surge is coming within 24-48 hours! But kalau fainter je, boleh try lagi tomorrow sebab timing OPK memang kena careful, especially around CD13 when most of us usually catch the surge.