It is normal for menstruation to be 4-5 days early every month. Women’s menstrual cycle is between 21-35 days, and 7 days early or postponed are normal. The normal menstrual cycle for women is between 21-35 days, with an average cycle of 28 days. If the menstrual cycle is 4-5 days early every time, it means that the menstrual cycle is around 24 days, and it is normal as long as the menstrual flow is normal and the period is 3-5 days, which is a regular menstrual cycle. Menstruation is due to cyclical changes in the level of sex hormones in women’s body, which causes the endometrium to shed and is regulated by the hypothalamic-pituitary-gonadal axis. Therefore, if there are problems with the above links, they can lead to abnormal menstruation, such as endocrine disorders, gynecological inflammation, etc. Emotions and diet, can also affect menstruation. If it is early or pushed back by more than 7 days, it is recommended to consult a doctor promptly. There is no need to be nervous if your period is 4-5 days early. Make sure you sleep, go to bed early and get up early to avoid overworking. If you are not sure, you can go to the gynecology department of the hospital 2-4 days after your period to check the sex hormone six to know the hormone level.