The sudden absence of menstruation after two days is considered to be related to the consumption of cold and stimulating foods or overwork and excessive anxiety and adverse emotional effects. Menstruation is the bleeding caused by the shedding of the endometrium. The occurrence of menstruation is regulated by the hypothalamic-pituitary-ovarian axis, so any factor that affects the endocrine system may affect the normal menstruation. During menstruation, if you eat cold food, such as cold drinks, sorbet, crab, etc., it is easy to cause the normal menstruation to stop suddenly, and there may also be symptoms of abdominal pain, so it is recommended that you can take Yimoucao to regulate it. Excessive exertion or major mental factors can also easily affect the secretion of hormones in the body and thus affect menstruation. It is recommended to pay attention to rest during the menstrual period and avoid overexertion and adverse emotional factors as much as possible, while paying attention to perineal hygiene and changing sanitary napkins regularly.