Usually 14 days after ovulation is the date when a woman should have her period, if there is still no period more than 14 days after ovulation, the possibility of pregnancy should be ruled out. This is because if pregnancy occurs after ovulation, the uterine lining will not shrink under the continuous action of estrogen and progesterone, and the uterine lining will not shed, so pregnancy will not result in menstruation at this time. If there is no menstrual cycle for more than 14 days or even longer after ovulation, it is important to consider the possibility of ovarian insufficiency.