when does implantation happen

Implantation typically happens about 6 to 10 days after ovulation, with an average around 8 to 10 days. It can occur as early as 6 days and as late as 12 days post-ovulation. This is when the fertilized egg (blastocyst) embeds itself into the uterine lining to begin pregnancy. The process involves stages like migration, hatching, apposition, adhesion, and invasion into the uterine wall. After implantation, the embryo starts producing hCG, the hormone detected by pregnancy tests. So, implantation usually occurs roughly 6 to 12 days after ovulation or fertilization.