Haircuts 2014 - Pictures Of Menstrual Blood Clots, 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. Causes of blood clots during menstrual cycles | ehow, Causes of blood clots during menstrual cycles. some women have heavy bleeding during their periods, and these are the women who usually experience clotting. very.