Having bleeding 4 days before expected period implantation bleeding?

It is possible that the bleeding you are experiencing is implantation bleeding. Implantation bleeding is light bleeding or spotting that occurs when a fertilized egg implants into the lining of the uterus. It typically occurs 10-14 days after ovulation and can last for a few days. However, it is also possible that the bleeding you are experiencing is due to other causes, such as hormonal imbalances or an underlying medical condition. If the bleeding is heavy or prolonged, or if you are experiencing any other symptoms, such as abdominal pain or fever, it is important to see a doctor to rule out any other potential causes.