Title: Fetal Development: From Insemination to Birth - Pregnancy Center - Everyday Health
Headings: 
What's Going On in There During Pregnancy?
Insemination – the First Step in Pregnancy
Implantation of the Fertilized Egg
The Timeline of Pregnancy
5 Weeks Into Pregnancy: Fetal Development
8 Weeks Into Pregnancy: Fetal Development
12 Weeks Into Pregnancy: Fetal Development
16 Weeks Into Pregnancy: Fetal Development
20 Weeks Into Pregnancy: Fetal Development
24 Weeks Into Pregnancy: Fetal Development
32 Weeks Into Pregnancy: Fetal Development
36 Weeks Into Pregnancy: Fetal Development
37 Weeks to Childbirth
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Content: 8 Weeks Into Pregnancy: Fetal Development
At the end of six weeks, the fetal heartbeat may be seen and heard during a special test called a vaginal ultrasound. By seven weeks every one of the embryo's essential organs has started to form. By the end of eight weeks the embryo begins to look like a little human and becomes a fetus. The fetus has begun to develop facial features and is the size of a bean. 12 Weeks Into Pregnancy: Fetal Development
The fetus' face is now well formed, and the liver is actively making red blood cells. The arms and leg buds have now become longer and are recognizable limbs. Genitals appear to differentiate the sex of the fetus, which is now able to make a little fist. The head makes up about half of its body size and the fetus will close its eyes now until about week 28.