Menstruation is usually once a month, but sometimes the day is clearly calculated, but it is late, which makes people worried! Many women think, “I’ll save myself the trouble if my period doesn’t come! But you know what? The late menstruation, or even more than a week, is the body is telling you that something is wrong! 4 major causes of menstruation: Pregnancy: Once a woman is pregnant, her periods will stop. So this is the first factor to consider once a woman doesn’t get her period. Hormones: Changes in estrogen and progesterone levels in the body can disrupt the normal menstrual cycle. This is why irregular periods are most often seen in adolescent and menopausal women. Physiological or mental: Failure to keep warm before the menstrual period and being attacked by cold will cause the blood to clot and slow down the flow of blood in the uterus, which will naturally lead to a delay in menstruation. Other causes: Premature ovarian failure, polycystic ovary syndrome, severe endometrial scarring (e.g. cervical or uterine adhesions after abortion), endometrial polyps or thickening, uterine fibroids. Mild menstrual disorders in adolescence or menopause usually do not require treatment, and menopause after pregnancy is normal. Therefore, these two conditions do not require special treatment. However, other causes of menstrual disorders can be treated according to the etiology as follows: 1. If there is a primary disease, treat the underlying disease; 2. If the factor intrauterine device causes menstrual disorders, change the method of birth control; 3. If the menstrual disorders are caused by excessive exercise or mental stress, change the lifestyle, moderate and reasonable balance of exercise and rest; 4. If the menstrual disorders are caused by premature ovarian failure, early 4.If menstrual disorders are caused by premature ovarian failure, they should be diagnosed and treated early to avoid aggravation of the condition and infertility. 5. For menstrual disorders caused by changes in hormone levels, you should consult your doctor about hormone therapy.