Rere Reina on Instagram: "Fascinating Journey of how Baby are made . A baby starts as a sperm and egg joining (fertilization) in the fallopian tube, forming a single cell (zygote) that divides into a ball of cells (blastocyst) which implants in the uterus lining, developing into an embryo that grows into a fetus over about 9 months, nourished via the placenta and umbilical cord. #howbabysaremade"