It is normal if menstruation is delayed for up to 5 days during the weaning period. If it is delayed for more than 5 days, it is clinically abnormal. Menstruation is a normal physiological phenomenon, so it is only physiological if it is regular and the time of the period, the amount of menstruation and the color of menstruation are the same as before. Any change in the menstrual cycle, the timing of menstruation, or the amount of menstruation is abnormal. As the baby does not suckle the nipple locally during the weaning period, it will reduce the production of lactogen in the body, which will lead to corresponding changes in the endocrine system during this period, so it may delay the menstruation for a few days. If you haven’t had your period for more than 5 days, it is advisable to rule out the possibility of pregnancy first and take progesterone orally to induce menstruation if necessary according to the results.