Menstruation is delayed for 8 days for women of childbearing age to consider whether there is a possibility of pregnancy, it is recommended to do urine pregnancy test or blood test blood human chorionic gonadotropin. If a woman’s menstrual cycle is regular, a delay of 3-7 days is normal, and a delay of 8 days is abnormal. If you are not pregnant, you can first observe, may be a woman’s recent life, work tension, emotional changes in the phenomenon of endocrine disorders, menstruation will be delayed performance do not worry too much, keep a happy mood. If the phenomenon of delayed menstruation occurs for a long time, it is recommended to go to the hospital to check whether there are certain diseases, according to the cause of the symptomatic treatment. If you have delayed menstruation, you should also consider whether or not you have recently taken birth control pills, because birth control pills tend to affect hormone levels in the body, which can lead to delayed menstruation.