How does not arrive menstruation a few haemorrhage return a responsibility

Not to menstrual period shows a small amount of vaginal bleeding and a variety of factors, if the menstrual period lasts for a long time, may be caused by incomplete corpus luteum atrophy, if the menstrual clean about a week, showing a small amount of vaginal bleeding, may be due to ovulation after estrogen levels decline, caused by withdrawal bleeding, if bleeding before menstruation, may be related to insufficient function of corpus luteum. In addition, organic lesions can also cause mild vaginal bleeding during menstruation, such as uterine fibroids, uterine adenomyoma, endometriosis, endometrial polyps, endometriosis, cervical polyps, cervicitis, cervical cancer and other diseases. What is the specific cause? You need to go to the hospital to do relevant examinations, do gynecological color Doppler examination, gynecological examination and six levels of female sex hormones to understand the specific causes of bleeding, and then symptomatic treatment.