What's the matter if menstruation has lasted for many days and there's only a little black discharge?

Patient's question:

Sure, here is the translation of the provided content into English:
No

Doctor's answer:

Hello, according to your description, you can check the endocrine and also have a color Doppler ultrasound to examine the uterine cavity. Actively treat the cause, you can try taking Wuji Baifeng Pills and Xiaoyao Pills, appropriately supplement estrogen, and eat more soy products. Wish you health. The occurrence of menstrual disorders not only affects a woman's body but can also lead to gynecological diseases. Therefore, it is best to have a routine check-up in the gynecology department of the hospital, identify the cause, and then treat accordingly. Pay attention to personal hygiene and maintain cleanliness of the perineal skin in daily life.