From a tiny cluster of cells to a bouncing baby - fetal development is an amazing process. Here you'll see pictures of how a fetus develops each week, and each trimester. Plus what's happening to your baby throughout the fetal development process.
Sperm Meets Egg: Weeks 1 to 3 of Pregnancy
First Trimester Ultrasound Pictures
fetal development
Baby's Alertness in the Womb
Second Trimester Begins: Weeks 13 to 17 of Pregnancy
Second Trimester Ultrasound Pictures
Sleep Cycles: Weeks 26 to 30 of Pregnancy
Third Trimester Ultrasound Pictures
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Twins: A Closer Look at Your Developing Babies
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How Big Is Your Baby in Third Trimester?
Ultrasound Image - Prenatal Testing
Fetal Development Weeks 9 Through 13
Week 35
Week 35 Ultrasound: What It Would Look Like
Week 37
Week 37 Ultrasound: What It Would Look Like
Week 9
Week 9 Ultrasound: What It Would Look Like
Week 18
Week 18 Ultrasound: What It Would Look Like
Week 20
Week 20 Ultrasound: What It Would Look Like
Week 14
Week 14 Ultrasound: What It Would Look Like
Week 39
Week 39 Ultrasound: What It Would Look Like
Feeling Baby Move: Weeks 18 to 21 of Pregnancy
What Does a Baby Kick Feel Like?
Week 21
Week 21 Ultrasound: What It Would Look Like
Week 7
Week 7 Ultrasound: What It Would Look Like
Little sister touching pregnant sister's belly
Quickening in Pregnancy: Feeling the First Fetal Kicks
Week 12
Week 12 Ultrasound: What It Would Look Like
Week 26
Week 26 Ultrasound: What It Would Look Like
Week 10
Week 10 Ultrasound: What It Would Look Like
Week 11
Week 11 Ultrasound: What It Would Look Like
Sperm swimming to egg
The Inside Story: Your Baby in Weeks 1 Through 4
Week 32
Week 32 Ultrasound: What It Would Look Like
Week 5
Week 5 Ultrasound: What It Would Look Like
Week 23
Week 23 Ultrasound: What It Would Look Like
Week 36
Week 36 Ultrasound: What It Would Look Like
Week 15
Week 15 Ultrasound: What It Would Look Like
Week 16
Week 16 Ultrasound: What It Would Look Like
How Big Is Your Baby Measuring Pregnant Belly
How Big Is Your Baby in Second Trimester?
Week 28
Week 28 Ultrasound: What It Would Look Like
Week 8
Week 8 Ultrasound: What It Would Look Like
Week 34
Week 34 Ultrasound: What It Would Look Like
Week 30
Week 30 Ultrasound: What It Would Look Like
Week 33
Week 33 Ultrasound: What It Would Look Like
Week 17
Week 17 Ultrasound: What It Would Look Like
pregnant woman at doctors office
Fetal Development Weeks 36 Through 40
Week 29
Week 29 Ultrasound: What It Would Look Like
Week 38
Week 38 Ultrasound: What It Would Look Like
Week 27
Week 27 Ultrasound: What It Would Look Like
Week 6
Week 6 Ultrasound: What It Would Look Like
Week 25
Week 25 Ultrasound: What It Would Look Like
Week 24
Week 24 Ultrasound: What It Would Look Like
Week 22
Week 22 Ultrasound: What It Would Look Like
My Prenatal Visits
Preventing Prematurity
Week 13
Week 13 Ultrasound: What It Would Look Like
Week 31
Week 31 Ultrasound: What It Would Look Like
ultrasound of twins
Complications with Twins
baby kicks
Baby Kicks