Women should know that they can judge whether their reproductive system is normal based on whether their menstrual cycle is regular, as well as the color, odor, amount, and time of menstruation. If one or more of the menstrual cycles are abnormal, it must be taken seriously. There may be problems with the reproductive system. Some women have asked, is it normal for the first few days of menstruation to be black?
The color of normal menstrual blood is mostly dark red. If menstrual blood stays in the uterus for a long time, the color of the discharged menstrual blood will change from dark red to black. The main reason for menstrual blood staying in the uterus is due to poor circulation. Menstrual blood is compressed and discharged by the uterus. If the uterine contraction ability is poor, it will be difficult to discharge menstrual blood. In addition, women have a cold constitution and slow blood circulation, which can also cause menstrual blood to freeze and become black.
Another type is that women belong to the posterior position of the uterus. Due to the position of the uterus, the cervix is higher than the uterus, so menstrual blood cannot be smoothly discharged, causing menstrual blood to accumulate in the uterus for a long time and turn black. For those with poor uterine contraction ability and poor menstrual blood discharge caused by the posterior position of the uterus, medication can be used to strengthen uterine contraction, compress the uterine cavity, and allow menstrual blood to be discharged smoothly. Women with cold bodies need to adjust their constitution. When their constitution is well adjusted, the color of menstrual blood will also return to normal.
However, if the color of menstrual blood is black, it should also be considered whether it is caused by the failure to replace sanitary pads in a timely manner. After the menstrual blood is discharged, it will oxidize and produce iron oxide when it comes into contact with the air in the sanitary pad. Over time, it will cause the color of menstrual blood to turn black. There is no need to worry about this situation. However, if the sanitary pad is not replaced for a long time, it is easy to cause a large number of bacteria to grow, increasing the risk of infection and inflammation. It is best to replace the sanitary pad every two hours or so.
