The chances of a woman getting pregnant during ovulation are about 25%, not 100%, mainly due to the following aspects: First, the ovulation period of women is longer, about 10 days, the chances of conception within 12 hours after the egg is discharged are higher, and the chances of conception in more than 12 hours are lower, and the survival time of the egg is shorter, so if you don’t rely on accurate tests and don’t accurately grasp the time of ovulation It is not easy to conceive. Secondly, women may have ovulation disorders, ovulation does not necessarily occur in the ovulation period, may occur in the safe period, to a certain extent, also reduces the chances of pregnancy. Third, women’s pregnancy by the impact of ovulation, but also by the emotional impact of the fallopian tubes are usually in the impact of the endometrial tolerance, but also to a certain extent will affect the chances of women’s fertilization. Fourthly, whether the male sexual function is normal and the quality of sperm will also affect the chances of female fertilization.