How long does ovulation test paper change from strong to weak

When ovulation test paper is strong, it indicates that ovulation will occur within 24-48 hours. It is recommended that ovulation test paper show strong (when sex life is about 24 hours, it can improve the chance of pregnancy. But this is only a relative time, because each person strong yang duration is different, some strong yang may last five or six hours, some may last two to three days, so it is suggested that patients should judge ovulation time according to their strong yang duration, arrange good cohabitation.