When does implantation typically occur after fertilization?

Implantation typically occurs 6 to 7 days after fertilization. Following fertilization, the zygote begins its journey down the fallopian tube, undergoing several divisions as it travels. By the time it reaches the uterus, it has developed into a blastocyst, which is the stage that is ready for implantation.

The blastocyst usually arrives in the uterus about 5 days after fertilization. Once in the uterine cavity, it continues to develop and prepares for implantation into the uterine lining. The actual process of implantation, where the blastocyst attaches to the endometrium, takes place between the 6th and 7th day after fertilization, marking a critical stage in establishing a pregnancy. This timing is important for successful implantation and subsequent development of the embryo.