symptom-guides
Implantation Bleeding: Symptoms, Timeline, and Signs
Implantation bleeding is light spotting from a fertilized egg attaching to the uterine lining. Learn what it looks like and how it differs from a period.
What Is Implantation Bleeding Implantation bleeding is light spotting that some people experience when a fertilized egg attaches to the uterine lining. During implantation, small blood vessels in the endometrium can be disrupted, producing a small amount of bleeding that makes its way out of the cervix. Not everyone experiences it. Many people who become pregnant notice no spotting at implantation at all. Light spotting is also easy to miss or attribute to something else. Its presence does not confirm pregnancy, and its absence does not indicate a problem. This guide is for educational purposes only and is not a substitute for medical advice. When Does It Happen Implantation typically occurs 6 to 12 days after ovulation. In a 28 day cycle where ovulation happens on day 14, this places possible implantation bleeding between roughly days 20 and 26. That window often overlaps with when premenstrual spotting might also occur, which is one reason the two are frequently confused. The timing relative to your expected period matters: Implantation bleeding typically appears a few days before an expected period It rarely starts on the exact expected period start date If spotting appears righ