Generally, you will have normal menstruation within two weeks after stopping progesterone. If progesterone is discontinued for more than 14 days without menstruation, you need to check the sex hormone panel. If the sex hormone panel indicates a rise in FSH and LH, it may be due to a decline in ovarian function, such as premature ovarian failure or post-menopause. If the sex hormone panel indicates a decrease in both FSH and LH, it may be a central amenorrhea, such as non-menstruation due to excessive weight loss, or non-menstruation even after progesterone, it may be a central amenorrhea. If there is no menstruation after progesterone, the sex hormones are within the normal range, the basal body temperature is biphasic, and if there is a combined history of uterine operation, consider the possibility of endometrial damage.