Efe
New member
How many weeks old is a blastocyst?
In weeks 4 to 5 of early pregnancy, the blastocyst grows and develops within the lining of the womb. The outer cells reach out to form links with your blood supply. After some time, they will form the placenta (afterbirth). The inner group of cells develop into the embryo.
In weeks 4 to 5 of early pregnancy, the blastocyst grows and develops within the lining of the womb. The outer cells reach out to form links with your blood supply. After some time, they will form the placenta (afterbirth). The inner group of cells develop into the embryo.