Hi,
Changes in color and thickness of menstrual blood are often normal.Sometimes you may notice that your menstrual blood becomes dark brown or almost black as you near the end of your period. This is a normal color change. It happens when the blood is older and not being expelled from the body quickly. If you ever feel something's not right with your period, see your physician.
Maryann
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Hi,
October 18, 2011 - 4:46pmChanges in color and thickness of menstrual blood are often normal.Sometimes you may notice that your menstrual blood becomes dark brown or almost black as you near the end of your period. This is a normal color change. It happens when the blood is older and not being expelled from the body quickly. If you ever feel something's not right with your period, see your physician.
Maryann
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