Yes. That's why we miss our periods. During our cycles we shed the lining of our uterus because an egg didn't take. Implantation bleeding is when the egg implants itself into the uterus causing us to miss our cycle and we might spot when that happens. Not everywomen does though. Some women experience implantation bleeding a few days prior to our expected menstrual time and others at the time. The harder the egg implants itself the more likely we are to experience implantation bleeding. Even though some women don't experience it, doesn't mean that you are going to have a problem with your pregnancy. It just depends on our bodies.
at 6:07 PM on Oct. 5, 2008