Jewish law distinguishes six stages of human development ... the preimplantation embryo (from fertilization to implantation); (ii) the embryo (from implantation to identifiable organogenesis ...

Human Reproduction is a peer-reviewed scientific journal covering all aspects of human reproduction, including reproductive physiology and pathology, endocrinology, andrology, gonad function ...

Implantation bleeding happens around 10-14 days after fertilization, says Dr. Makarov. But fertilization isn't instantaneous ...

Although the egg may have been fertilized over a week before, it's only after implantation that your body starts producing hCG—human chorionic ... fallopian tube. If fertilization is successful ...