Implantation bleeding appears as a small amount of vaginal discharge that is typically pinkish to brownish in color. Around 30% of women will experience implantation bleeding. Implantation bleeding typically will occur at around 7 to 10 days after conception, or about four weeks after the last menstrual period. If you believe you have started a period, but the bleeding is scanty, pinkish, spotty, and doesn’t follow a normal flow pattern of a period (from light to heavy and back to light) it is probably not a period, but rather it is probably implantation bleeding rather than the start of your period.If implantation bleeding is accompanied by cramping or increased bleeding, implantation bleeding is generally nothing to be concerned about. However, heavier bleeding that is accompanied by cramping can be a sign of a variety of problems. If this is the case, you should contact your health care provider immediately. Bleeding during pregnancy can indicate miscarriage, or it can indicate some other pregnancy-related problem.