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Select An Article Font Size  Menstrual Blood Problems: Clots,
Color, and Thickness  If your menstrual blood varies in color
and consistency throughout your monthly period, it's likely that
it's perfectly normal. There are times, though, when changes in
color, thickness, or clotting may indicate a problem.  You might
feel embarrassed asking your health care provider about
menstrual blood problems, but it is important.   Recommended
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Enemies?    What happens during a menstrual period, and how long
does it last?  During your menstrual cycle, the lining of your
uterus thickens to get ready for pregnancy. Then, during your
period, your body sheds the uterus lining along with blood. The
amount of blood and fluid lost is usually between 4 and 12
teaspoons each cycle.  The average menstrual cycle lasts 28
days. For some women, though, cycles can be as short as 21 days.
For others, they can be as long a