The fertilized cell stays for 2-3 days in the place where it was “overtaken” by the sperm, during this period active division occurs, then the zygote, with the help of hairs and contraction of the tube muscles, begins to move towards the uterus, into the cavity of which it enters after 5-7 days. The corpus luteum, formed at the site of the follicle from which the egg emerged, actively “generates” progesterone, preparing the uterine endometrium for the attachment of the embryo.
Sometimes, during the process of implantation, the fertilized egg damages the blood vessels and a discharge similar to menstrual discharge appears. Such a sign can confuse a woman; it will seem that fertilization has not occurred. Before making hasty conclusions, wait for results confirming or refuting pregnancy.