Question: is it possible to have implantation at 4dpo?
Answer: When you're at 4 DPO, the fertilized egg could still be traveling down your uterine cavity. During implantation, the fertilized egg will burrow itself into your uterine lining. ... Implantation itself usually occurs between 6 and 12 DPO. Therefore, it's unlikely that you'll experience a complete implantation at 4 DPO.