The term “period” generally refers to a woman’s menstrual period. If your first period is unusually heavy, it is considered normal. Generally speaking, it is normal for a woman to bleed around 20 to 60 milliliters of blood during a menstrual cycle, but if it exceeds 80 milliliters, it is considered to be an increase in menstrual flow. However, for adolescent women who are having their first menstrual period, because the ovarian function is not yet perfect, the estrogen secretion is not enough, there may be abnormal menstruation, such as increased menstruation, prolonged menstruation, or irregular vaginal bleeding, and so on. Irregular vaginal bleeding in adolescent women may last for half a year to a year. It is recommended that as long as the bleeding is not particularly heavy, it can be observed for the time being. If the bleeding increases significantly during menstruation and is accompanied by dizziness, fatigue, abdominal pain and other symptoms, it is recommended to consult a doctor in a timely manner, complete the relevant examinations, and under the guidance of a professional doctor to clarify the cause of the disease and targeted treatment to avoid delaying the condition.