Is it necessary to bleed or spot for implantation take place post embryo transfer?

It is not necessary to bleed or spot for implantation to take place post embryo transfer. Implantation is the process by which a fertilized egg attaches to the lining of the uterus. This process usually occurs 6-10 days after ovulation, and it does not typically cause any noticeable symptoms. Some women may experience light spotting or bleeding around the time of implantation, but this is not always the case.