The first day of my period, the blood was black.

When menstruation comes, the first day of bleeding is black, or dark red, this is due to the first day of bleeding is relatively small, these blood encounter acidic secretions in the vagina. The color will become dark or black, which is normal. Wait until the second day to the third day of menstruation, the menstrual volume will increase significantly, this time the color of menstrual blood will obviously turn red, this is a normal phenomenon, there is no need to worry.