A small amount of blood appears two days before the menstrual period is related to physical factors: 1, may be an endocrine disorder, the body hormone secretion disorder and lead to early menstruation problems, menstruation in advance of about 2-7 days is a normal situation, you can do without treatment, usually pay more attention to rest can. It is best not to eat stimulating food during the menstrual period to avoid menstrual disorders. 2, it may be a small amount of bleeding caused by irregular diet, lifestyle habits and other problems, which can also directly affect the menstrual cycle or early menstruation. 3, there may also be gynecological diseases, such as endometritis, pelvic inflammatory disease will directly affect the shedding of the endometrium, thus appearing The early menstruation symptoms. However, malignant tumors or other diseases cannot be ruled out, it is best to seek medical treatment in time.