If your period is delayed for five days and still hasn’t come, it is considered to be caused by normal physiological phenomena, pregnancy, endocrine disorders and other factors. 1. Normal physiological phenomenon: Generally speaking, women’s menstrual cycle is a normal physiological phenomenon when it is advanced or pushed back by a week or so. So when the menstrual period is delayed for five days and has not come, it is within the normal range and can continue to observe. 2. pregnancy: for women of childbearing age, and there is a normal sex life, menstruation delayed for five days has not come, may also be caused by pregnancy. Once a woman is pregnant, the first symptom is the stoppage of menstruation, which can be detected by using early pregnancy test. 3. Endocrine disorders: when the patient has malnutrition or mental overstress, etc., can lead to female endocrine disorders, endocrine disorders can affect the menstrual cycle, leading to menstruation early or delayed and other phenomena. Therefore, if the menstrual period is delayed for five days, it may be caused by endocrine disorders. In addition, polycystic ovary syndrome, endometriosis and other diseases can lead to menstruation delayed five days did not come phenomenon, we should pay attention to timely to the hospital, under the guidance of the doctor in order to clarify the specific causes.