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Your Baby

profile of a pregnant woman who is looking at ultrasound photo
Photo credit: iStock.com / SDI Productions

Fetal development is truly miraculous. See how your baby grows in the womb and the stages of fetal development from fertilized egg to full-grown baby. If you're having twins, check out our amazing pictures of how fraternal twins develop side by side. And if you're wondering what cord blood banking is – and whether it's something you'll do for your baby – we have information on benefits to consider.  

Photo credit: iStock.com / SDI Productions

Twins & More

newborn twin babies making faces while lying on a green surface
Signs you’re having twins or multiples
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
nonidentical twins in womb at 3 weeks
Twins in the womb: Fetal development month by month
Reviewed by Cheryl Axelrod, M.D., ob-gyn
illustration of a womb with twins embryo at 4 weeks
4 weeks pregnant with twins
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
illustration of womb with twins embryo at 8 weeks
8 weeks pregnant with twins
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
couple with double stroller taking care of each child separately at the same time while staying at the park
What are the chances of having twins?
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
illustration of womb with twins fetus at 36 weeks
36 weeks pregnant with twins
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
illustration of twin babies head down in utero
How your twins’ fetal positions affect labor and delivery
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
ultrasound photo showing twin babies
Can twins have different fathers?
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
ultrasound photo showing twin babies
What is vanishing twin syndrome?
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
illustration of womb with twins fetus at 32 weeks
32 weeks pregnant with twins
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
illustration of womb with twins fetus at 16 weeks
16 weeks pregnant with twins
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
A close-up of a woman's hands holding a positive pregnancy test
Can you get pregnant while you're pregnant? Superfetation, explained
Reviewed by Cheryl Axelrod, M.D., ob-gyn
illustration of womb with twins fetus at 28 weeks
28 weeks pregnant with twins
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
illustration of womb with twins fetus at 24 weeks
24 weeks pregnant with twins
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
illustration of womb with twins fetus at 20 weeks
20 weeks pregnant with twins
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
illustration of womb with twins fetus at 12 weeks
12 weeks pregnant with twins
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
Couple holding their twin babies in the air
Are twins hereditary?
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
pregnant woman in living room
Pregnant with twins: premature birth and other complications
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
babies playing together
Mixed-race twins: one black, one white
By Evonne Lack Bradford
woman in hospital bed next to man
go to video page
Live birth video: twins
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
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Fetal Health & Development

happy pregnant woman with hands on belly
Fetal movement: When can you feel your baby move?
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
Illustration of the baby's skull bones at birth
How your baby's skull, skeleton, and bones develop
Reviewed by Liz Donner, M.D., pediatric hospitalist
animation of baby inside woman's belly
go to video page
Inside pregnancy: Weeks 28 to 37
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
fetal baby in utero
Fetal development week by week
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
pregnant woman holding her belly
When will my baby drop?
Reviewed by Cheryl Axelrod, M.D., ob-gyn
baby with hair
When do babies get their skin color?
Reviewed by Emily Holthaus, M.D., ob-gyn
pregnant woman holding ultrasound
When do your baby's sex organs develop in the womb?
Reviewed by Emily Holthaus, M.D., ob-gyn
illustration of placenta in uterus and detail illustration with placements of maternal and umbilical vessels and chronionic villi
The placenta: What it is and how it works
Reviewed by Judith Venuti, Ph.D., embryologist
expecting mom and daughter talking
When can your baby hear you?
Reviewed by Liz Donner, M.D., pediatric hospitalist
pregnant woman listening to partner playing guitar
Can babies listen to music in the womb?
Reviewed by Liz Donner, M.D., pediatric hospitalist
pregnant woman making heart on her belly with her hands
When does the heart develop in a fetus?
Reviewed by Cheryl Axelrod, M.D., ob-gyn
Baby's tummy
How does your baby eat and poop in the womb?
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
newborn baby crying
When are babies' lungs fully developed?
Reviewed by Emily Holthaus, M.D., ob-gyn
illustration of a fetal brain development
When does a fetus develop a brain?
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
newborn with wide eyes looking excited
How your baby's eyes and vision develop in the womb
Reviewed by Judith Venuti, Ph.D., embryologist
profile shot of a baby in utero
Fetal development: Your baby's hair
Reviewed by Chandani DeZure, M.D., FAAP, pediatric hospitalist
Baby toes
When does a baby develop arms and legs?
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
Illustration of a baby in the womb and the umbilical cord
Your baby's umbilical cord
Reviewed by Liz Donner, M.D., pediatric hospitalist
a strand of DNA
Can a baby have two sets of DNA? Chimerism, explained
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
baby eating yogurt
Can babies taste in the womb?
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
close-up of fetus resting (animation)
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Inside pregnancy: Girl or boy?
Reviewed by Jacqueline Dela Merced, M.D., ob-gyn
baby showing teeth
How your baby's tooth buds develop
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
mom and young daughter feeling Mom's pregnant belly
How to do kick counts
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
animation of fetus
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Inside pregnancy: Weeks 15 to 20
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
baby looking into the distance
Welcoming babies with Down syndrome
animation of fetus
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Inside pregnancy: Weeks 21 to 27
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
animated image of fetus
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Your baby's senses during pregnancy
Reviewed by Layan Alrahmani, M.D., ob-gyn, MFM
woman in chair looking at camera
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Baby kicks during pregnancy
Reviewed by Amanda Williams, M.D., MPH, ob-gyn
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Cord Blood Banking

Baby’s umbilical cord
What is cord blood banking?
Reviewed by Frances Verter, Ph.D., cord blood expert
Cord Blood Banking
- Ad content for Cord Blood Registry -
a full blood bag
Cord blood banking reviews
Reviewed by Frances Verter, Ph.D., cord blood expert
Flower with a long stem
'The Bachelor' inspired me to donate my son's cord blood
By Amelia Harnish
Pregnant woman talking to doctor
5 questions parents forget to ask their doctors before cord blood banking
Reviewed by Melissa Bykofsky, Executive Editor, Editorial Strategy and Growth
Purse with heart
How much does cord blood banking cost?
Reviewed by Frances Verter, Ph.D., cord blood expert
heart graphic
Cord blood centers: Public vs. private banks
Reviewed by Frances Verter, Ph.D., cord blood expert
pregnant mom talking to mom with newborn
7 moms share why they chose cord blood banking
Reviewed by Melissa Bykofsky, Executive Editor, Editorial Strategy and Growth
illustration of cord blood collection bag
go to video page
Cord blood: How and when it’s collected
Reviewed by Frances Verter, Ph.D., cord blood expert
illustration of mom and dad hugging baby
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Why bank cord blood? These parents tell all
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Latest in your baby

Cord Blood Banking
- Ad content for Cord Blood Registry -
Flower with a long stem
'The Bachelor' inspired me to donate my son's cord blood
By Amelia Harnish
Pregnant woman talking to doctor
5 questions parents forget to ask their doctors before cord blood banking
Reviewed by Melissa Bykofsky, Executive Editor, Editorial Strategy and Growth
heart graphic
Cord blood centers: Public vs. private banks
Reviewed by Frances Verter, Ph.D., cord blood expert
pregnant mom talking to mom with newborn
7 moms share why they chose cord blood banking
Reviewed by Melissa Bykofsky, Executive Editor, Editorial Strategy and Growth
Purse with heart
How much does cord blood banking cost?
Reviewed by Frances Verter, Ph.D., cord blood expert
Baby’s umbilical cord
What is cord blood banking?
Reviewed by Frances Verter, Ph.D., cord blood expert
pregnant woman holding her belly
When will my baby drop?
Reviewed by Cheryl Axelrod, M.D., ob-gyn

Community

  • What are your hopes for your baby or pregnancy?
    By AmyRaeN in December 2017 Birth Club
    When we first start trying to conceive or get that beautiful BFP, we start dreaming of how our pregnancy will go, or what our baby will be like. Of course, our main hope is for a healthy pregnancy and baby. What are your other hopes and dreams for your baby or pregnancy?
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    • What are your hopes for your baby or pregnancy?
      By moonpants in August 2018 Birth Club
      When we first start trying to conceive or get that beautiful BFP, we start dreaming of how our pregnancy will go, or what our baby will be like. Of course, our main hope is for a healthy pregnancy and baby. What are your other hopes and dreams for your baby or pregnancy?
        12-06-17
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      • What are your hopes for your baby or pregnancy?
        By julietsmama16 in October 2018 Birth Club
        When we first start trying to conceive or get that beautiful BFP, we start dreaming of how our pregnancy will go, or what our baby will be like. Of course, our main hope is for a healthy pregnancy and baby. What are your other hopes and dreams for your baby or pregnancy?
          02-21-18
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