This situation is not normal, there are several situations: 1, consider the symptoms of menstrual irregularities, many women usually do not pay attention to health care, menstrual period by emotional stimulation, drug stimulation, mental stimulation and other problems, will trigger the symptoms of menstrual irregularities, menstruation transient problems. 2, it may be the case that the pregnancy caused by the pregnancy, in the case of pregnancy if there is a miscarriage of pregnancy, there will be a small amount of vaginal bleeding. The first thing you need to do is to get a good deal of money to pay for the services you need. 3, there may be endocrine disorders, gynecological inflammation and other diseases caused by the emergence of these diseases can also lead to changes in the menstrual period, the appearance of menstruation, such as low menstrual flow and other symptoms, if it is a normal menstrual period, it is recommended that you go to the hospital in a timely manner to carry out examinations, and do a good job of adjusting the relevant work.