==External links==* Fetal Development Timeline from AboutKidsHealth.ca* The Changes in Each Stage of Human Development* Real Time Presentation of Human Embryo Development* Fetal development week by week at www.babycentre.co.uk* Pregnancy Week by Week* Chart of human fetal development* Development of the human embryo* The Visible Embryo from fertilization to birth* The Human Fertilisation and Embryology Authority (HFEA)* The Process of a Human Fertilized Embryo to Birth* How Pregnancy Happens
* Fetal Development Timeline from AboutKidsHealth.ca* The Changes in Each Stage of Human Development* Real Time Presentation of Human Embryo Development* Fetal development week by week at www.babycentre.co.uk* Pregnancy Week by Week* Chart of human fetal development* Development of the human embryo* The Visible Embryo from fertilization to birth* The Human Fertilisation and Embryology Authority (HFEA)* The Process of a Human Fertilized Embryo to Birth