No bleeding on the ninth day of taking emergency contraceptive pills may be normal. Emergency contraceptive pills contain a large amount of estrogen and progesterone, which can lead to a temporary increase in the level of hormones in the body, usually 5 to 7 days after taking the pill, as the body metabolizes, the level of hormones in the body begins to decline, and the endometrial lining of the uterus may experience withdrawal bleeding. However, some women do not experience withdrawal bleeding, which is also normal. So, no bleeding on the ninth day of taking emergency contraceptive pills may be normal. If there is no bleeding on the ninth day of taking emergency contraceptive pills, it is recommended to observe and keep an eye on your menstrual period for that month. If the menstrual flow in the month of taking the pill is relatively low or menopause occurs, you should go to the endocrinology department of a regular hospital as soon as possible for consultation and examination, to clarify whether the endometrium is inhibited or the endometrium is seriously damaged, and actively cooperate with the specialized doctors to take the next step of intervention and treatment measures.