Light-colored spotting in place of a menstrual period is a common sign of implantation bleeding, the process that occurs when a fertilized egg adheres to the lining of the uterus, according to the American Pregnancy Asso... More »

As Baby Center points out, newly-pregnant women often experience implantation bleeding when their period is due. This bleeding is usually lighter than a normal period and typically takes the form of light spotting over o... More »

Brown spotting six to 12 days after ovulation is a common sign of implantation bleeding due to pregnancy, according to BabyMed. Occurring when a fertilized egg attaches to the uterine lining, implantation bleeding is one... More »

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Proliferative endometrium refers to the process of the building up of the lining of the uterus just prior to ovulation. Ovulation is the period in the menstrual cycle of a female mammal when an egg is released from the o... More »

According to WebMD, brown-colored spotting in the place of a regular menstrual period can signify possible pregnancy, ovulation, perimenopause or polycystic ovary syndrome. In certain cases, mid-cycle spotting is harmles... More »