Under normal circumstances, menstruation delayed 1-2 days in the normal range. If menstruation has not come for more than 6 days, you need to consider the following situations: first, to consider pregnancy, women who usually have normal sex life, contraceptive measures are not done properly, the most common reason for delayed menstruation after pregnancy. You can find out if you are pregnant by taking a blood test for HCG or using a urine test strip. Second, if the endocrine disorders, ovarian function is not normal, can also cause menstrual delay. Thirdly, if a woman’s mental stress is particularly high, or her recent mood is particularly unstable, she has not rested well, and there is excessive dieting, weight loss and so on, it can also lead to the absence of menstruation.