Implantation is the beginning of pregnancy at which stage the 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. Use this calculator to find the most likely date range for implantation based on your cycle:
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