51 years old this month menstruation 5 days early 2 days before menstruation is very heavy, if it is an occasional occurrence is not a sign of going through menopause. Menopausal symptoms mainly include changes in menstruation, including changes in cycle, menstrual period and menstrual flow, which can be manifested as irregular cycle, long or short menstrual period, more or less menstrual flow, or even heavy bleeding or dribbling; it can also be manifested as unstable vasodilatation function, such as hot flashes; and neurological symptoms, such as agitation, irritability, or frustration, etc. Before menopause, in addition to changes in sex hormone levels, there are many other signs of menopausal symptoms. In addition to symptomatic changes, premenopausal menstruation can also be characterized by changes in the levels of sex hormones, which can be proved by blood tests. If the above menstrual changes occur occasionally, they can be observed for a while, because the causes affecting the menstrual cycle are complicated; if the symptoms occur frequently, segmental scraping should be performed and the scraped tissue should be sent for examination to prevent endometrial lesions.