Implantation bleeding and spotting is vaginal discharge that usually contains small amount of pinkish or brownish blood. Only about a third of all pregnant women experience this implantation bleeding. Some women report some bleeding or spotting around the time of implantation, the so called "implantation bleeding." Implantation bleeding, also called implantation spotting, does not look like a regular menstrual period. Implantation bleeding is scanty and usually pink or brownish discharge. Implantation bleeding is often brown in color though some mention it to be more reddish.