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Home / Resources / Pregnancy / Fetal Development

Fetal Development

Learn all about what happens when your baby grows from a tiny cluster of cells to a fully formed baby in your womb.

Determining Sex

Finding out whether you're having a boy or a girl is one of the most exciting parts of pregnancy. Learn when and how the big moment will happen.

One pink and one blue clothespin, representing a baby girl and baby boy. Fetal Development

How to Find Out Your Baby’s Gender with an Ultrasound

Medically Reviewed by: Lisa Valle, DO, FACOG

The words "Boy" and "Girl" on a blue and pink background. Fetal Development

When and How Can You Find Out Your Baby’s Sex?

Medically Reviewed by: Monica Lee, MD, FACOG

Pregnant woman getting an ultrasound from her technician, as she wants to use the Ramzi theory to predict her baby's sex. Fetal Development

Can the Ramzi Theory Really Predict Your Baby’s Sex?

Medically Reviewed by: Monica Lee, MD, FACOG

Pregnant woman looking at an ultrasound of her baby to determine the sex with the nub theory. Fetal Development

Is Nub Theory a Reliable Predictor of Your Baby’s Sex?

Medically Reviewed by: Monica Lee, MD, FACOG

Couple sitting with a pink and blue balloon preparing for their gender reveal party. Fetal Development

Are You Having a Boy or Girl? How to Predict the Sex of Your Baby

Medically Reviewed by: Monica Lee, MD, FACOG

Monitoring Health

Through home monitoring and regular checkups, you can keep up with your baby's development and address any concerns early on.

A pregnant woman and her partner touching her bump to perform a kick count. Fetal Development

Kick Counts: When and How to Track Your Baby’s Movements

Medically Reviewed by: Barry Aron, MD

A pregnant woman and her partner place their hands on the woman's belly to feel their baby kicking. Fetal Development

When Can You Feel Your Baby Move and Kick?

Medically Reviewed by: Lisa Valle, DO, FACOG

Pregnant woman monitoring her own baby's heartbeat. Fetal Development

When Can You Hear Your Baby’s Heartbeat?

Medically Reviewed by: Monica Lee, MD, FACOG

Multiples

When expecting more than one baby, there are additional things to be aware of. Get expert guidance on navigating a multiple pregnancy.

Two twin babies lying next to each other on their bellies. Fetal Development

Early Signs You May Be Pregnant With Twins or Multiples

Medically Reviewed by: Ann Dobry, DO, FACOG, MSCP

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Latest Articles

Jar of baking soda spilling onto a table, representing the baking soda gender test. Fetal Development

What Is the Baking Soda Gender Test, and Is It Accurate?

Medically Reviewed by: Monica Lee, MD, FACOG

Pregnant woman approaching viability week placing her hand on her baby bump. Fetal Development

Viability Week: When Can Your Baby Survive Outside the Womb?

Medically Reviewed by: Barry Aron, MD

A pregnant woman and her partner touching her bump to perform a kick count. Fetal Development

Kick Counts: When and How to Track Your Baby’s Movements

Medically Reviewed by: Barry Aron, MD

Pregnant woman holding two baby slippers. Fetal Development

FAQs about the Chinese Gender Predictor Chart and Calendar

Medically Reviewed by: Monica Lee, MD, FACOG

Woman in a doctor's office looking at her baby's first ultrasound. Fetal Development

Frequently Asked Questions about Ultrasound Due Dates

Medically Reviewed by: Monica Lee, MD, FACOG

Pregnant women sitting on a couch looking at her pregnancy tracker app. Fetal Development

What Are the Best Pregnancy Tracking Apps in 2025?

Medically Reviewed by: Wong Mun Yew, MBBS

One pink and one blue clothespin, representing a baby girl and baby boy. Fetal Development

How to Find Out Your Baby’s Gender with an Ultrasound

Medically Reviewed by: Lisa Valle, DO, FACOG

The words "Boy" and "Girl" on a blue and pink background. Fetal Development

When and How Can You Find Out Your Baby’s Sex?

Medically Reviewed by: Monica Lee, MD, FACOG

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