Lots More Information
Related HowStuffWorks Articles
- How Pregnancy Works
- Fact or Fiction: Pregnancy
- How Ultrasound Works
- How Cells Work
- What is a gene, and what is genetic engineering?
- Why is it that two people can have several children and the children look so different?
- Signs and Symptoms of Pregnancy
- How to Get Pregnant Using An Ovulation Calendar
- Pregnancy Exercises
- Signs and Symptoms of Labor
- Placenta Previa
- Miscarriage Symptoms, Causes and Treatment
- Anemia or an Iron Deficiency During Pregnancy and Childbirth
- What is an ectopic pregnancy?