After your period finishes , how many days does it take for implantation to happen . for example 14-18 days i had intercourse on my last day on my af?

See answer: Ovulation occurs ~14 days prior to the next period. Implantation, on the other hand, is the beginning of pregnancy at which stage the fertilized egg/embryo adheres to the wall of the uterus. At this early stage of prenatal development, the embryo is called a blastocyst. Implantation of a fertilized ovum is most likely to occur about 9 days after ovulation, but can range between 6 to 12 days.