How long does it take from fertilization to implantation?

Patient's question:

No

Doctor's answer:

The fertilization process takes about 24 hours. When a capacitated sperm enters the zona pellucida of a secondary oocyte, the fertilization process begins. The completion of fertilization is marked by the fusion of the chromosomes of the ooplasmic nucleus and the spermatic nucleus. After fertilization, the oocyte immediately begins mitosis and moves towards the uterine cavity while dividing.
36 hours after fertilization, the zygote divides into two cells, and 72 hours later, it divides into 16 cells, forming a morula. On the fourth day after fertilization, the cell cluster enters the uterine cavity and continues to develop there. At this stage, the cells have divided into 48 cells, forming a blastocyst ready for implantation.
The blastocyst can secrete a hormone that helps it embed itself into the endometrium. On the 6th or 7th day after fertilization, the blastocyst begins to implant. Implantation typically occurs in the upper one-third of the uterus. Once implantation is complete, the embryo is securely settled and begins to form the placenta,.