Baby developing inside you
over the weeks and months
Month 2: Critical time for major body organs
|This month is especially critical in the development of your baby. Any disturbance from drugs, viruses, or environmental factors such as pesticides may cause birth defects.|
Your baby's development is very rapid during the second month. By the end of the second month, all of your baby's major body organs and body systems, including the brain, lungs, liver, and stomach, have begun to develop. The first bone cells appear during this time. Eyelids form and grow but remain sealed shut. The inner ear is forming. Ankles, toes, wrists, fingers, and sexual organs are developing. At the end of the second month of pregnancy, your baby looks like a tiny human infant. If it is a boy, the penis will begin to form. If it is a girl, the vagina begins to form. From the end of the second month the embryo is called a fetus.
Week by week: First trimester ultrasound scan pictures
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