Aunt refers to menstruation. The reasons for not having a period usually include pregnancy and endocrine disorders, which should be taken seriously. Normally, women’s menstrual cycle fluctuates and it is normal for it to start 7 days earlier or later, but if it is delayed for a longer period of time, there may be other conditions. 1. Pregnancy: A longer delay in menstruation may indicate pregnancy, in which the ovaries do not secrete estrogen and progesterone cyclically, and the endometrium does not have the conditions for cyclic changes, so you should go to the hospital for a detailed examination in time to make a judgment. 2. Endocrine disorders: If a woman’s life is stressful or her work routine is irregular, the secretion of estrogen and progesterone may be imbalanced, which may cause disorders in the menstrual cycle. There may be other reasons for not having a period, so it is recommended to go to the hospital in time for a complete examination to determine the cause of the problem and then give targeted treatment or therapy.