The first day after the arrival of women’s menstruation, the amount will be relatively small, the next day the amount of menstruation will gradually increase, no other discomfort, is also a normal phenomenon, do not worry too much. If the entire period volume is low, consider the following reasons: First, anemia, if the deficiency of qi and blood, it will lead to a significant reduction in menstrual volume, usually dizziness, weakness, pale face, it is recommended to do routine blood tests can be clear, symptomatic treatment. Second, the presence of gynecological diseases, such as pelvic inflammatory disease, endometritis and other diseases, can lead to abnormal menstruation, if accompanied by abnormal leucorrhea, odor or itching and other discomfort, it is recommended to do routine examination of the leucorrhea, under the guidance of the doctor with drug treatment, control the inflammation. Third, a history of multiple abortions or scraping in the past can easily lead to endometrial damage and thus abnormal menstruation. It is recommended to do contraceptive measures to avoid unwanted pregnancy.