why would your period color be black
Retained menses: These can be another reason for black period blood. It would mean that the menses are being retained in the uterus or in vagina. It can be retained in vagina, the hymen covers the vagina completely and does not allow blood to flow out until pushed by contractions from uterus.
Although black or brown colored discharge during menstrual flow is fairly common among women, the situation doe not indicate severe disorders. This is because discoloration is commonly a result of the long menstrual period. The long period means that the blood has become oxidized thereby causing the change in color.
Causes of Black/Brown Discharge during Menstruation: When any of the following is the suspected reason for discoloration in menstrual flow, then something must be done: Stress and depression: When a woman is subjected to extreme stress and depression, the inner lining of the uterus becomes thin.