-
Month 1
Brain and Spinal Cord Develope -
Conception
Egg & Sperm Unite -
7 Weeks
Can't tell if the embryo is a boy or girl -
End of 6th Week
SRY chromosome released -
5 Months
Baby begins to hear sounds -
Week 3
Blastocyst attaches to the lining of the uterus -
Week 6
Heart is beating; organs are developing -
Week 9
Baby is 1" long: arms, hands, feet, legs, and eyes are developed; baby starts moving -
Week 10
Vital organs are formed; birth defects are unlikely to develop after this week -
Week 12
Finger and toe nails develop; end of first trimester -
week 14
Can tell if the fetus is a boy or a girl -
Week 18
Can begin to feel baby's movements -
Week 21
Fetus can hear sounds -
Week 26
Last trimester; fetus develops "baby fat" -
Week 28
Baby's eyes are beginning to open; can see -
Week 32
Baby is 4 pounds 11 inches; lanugo is falling off -
Week 36
Baby is in position for delivery