Just got my period. Blood's black. What's going on?

When menstruation comes, the menstrual blood is black, which is basically normal. When menstruation comes, because the scope of endometrial shedding is different, the amount is different. Generally, when menstruation comes, the endometrium is only partially shed, often showing black blood. In the middle, due to the large area of endometrial shedding, the blood will be red first, and the amount will be larger. Therefore, it is necessary to pay attention to the amount and days of menstruation during the whole menstrual period. If the blood is black throughout pregnancy and accompanied by a reduction in menstrual volume or shortening of menstrual time, it is often caused by endocrine disorders. If the menstrual volume is normal in the later period, no special treatment is required.