Fetal Development

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From a tiny cluster of cells to a bouncing baby -- your baby's growth is an amazing process. Here's what to expect at each stage of your pregnancy and how to know if Baby's development is on track.

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First Trimester: Images of Your Developing Baby First Trimester: Images of Your Developing Baby

...: Not measurable. Fetal Development Milestones: Fertilization! What You're Seeing: This week is when your.... Fetal Size: 1/18 to 1/16th of an inch (about the size of the pen dot). Fetal Development Milestones.../6 to 1/4 of an inch. Fetal Development Milestones: Baby-to-be takes on a tucked, C-shape. Head, legs...

Second Trimester: Images of Your Developing Baby Second Trimester: Images of Your Developing Baby

...Fetal Size: Length, 3 1/4 to 4 inches, crown to rump; weight, around 1 ounce. Fetal Development... to 4 1/2 inches, crown to rump; weight, 1 3/4 ounces. Fetal Development Milestones: Baby's skeletal.../2 ounces. Fetal Development Milestones: Fetal bones are becoming more visible on ultrasound. You may...

Your Developing Baby, Week by Week Your Developing Baby, Week by Week

..., and body type -- have been set since the moment of conception. Your developing baby, now called a zygote... and develops into two fetuses, the result is identical twins. They may share a placenta, but each baby usually..., but trust us: Super-important developments are already under way. This week the embryo splits into two parts...

Third Trimester: Images of Your Developing Baby Third Trimester: Images of Your Developing Baby

.../2 pounds. Fetal Development Milestones: Your baby now has added brain tissue and her scalp hair continuing.... Fetal Development Milestones: Your little one's muscles are maturing. She'll continue to gain weight... length 19 inches. Weight, 4 pounds. Fetal Development Milestones: Baby's toenails are now formed, he...

Your Changing Body Week-by-Week Your Changing Body Week-by-Week

From the time of conception until the time you give birth, your body is going to go through some major changes. Find out what to expect with our week-by-week look at your changing body.

How Big is Your Baby This Week? How Big is Your Baby This Week?

Get a sense of your baby's approximate length and weight from conception to birth with our week-by-week averages.

Gender Prediction Quiz

Are you pregnant and wondering if you are having a girl or a boy? Take this gender prediction quiz that predicts the gender of your baby!

Pregnancy Calendar - Ancient Chinese Birth Chart

Can an ancient Chinese calendar really predict the gender of your baby? Take our simple quiz and find out. The results could spill the beans about whether you're having a boy or girl.

Your Growing Pregnant Belly

A stunning, month-by-month photo gallery of pregnancy.

Due Date Calculator

You know you're pregnant, but when exactly will your baby make his big entrance? Use our pregnancy due date calculator to find out.

Your Pregnancy To-Do List Your Pregnancy To-Do List

Between preparing for baby and staying as healthy as possible, you have a lot to think about for the next nine months. Follow our week-by-week to-do lists to make it easy.

Baby Development Tracker

Follow your baby's growth and learn about all of the milestones he'll reach in his first year! Plus, you'll find Health and Safety Information and Mom Must-Know Tips for each week.

Quiz: Is It a Girl or a Boy?

Could there be a boy or a girl in your future? Take our fun quiz, based on ancient beliefs about gender prediction.

Your Developing Baby: Weeks 1 & 2

What's going on with your baby in pregnancy weeks one and two? Find out all about important pregnancy milestones and exciting fetal development specific to these weeks of pregnancy!

What the Old Wives What the Old Wives' Tales Say About Whether You'll Have a Boy or a Girl

Are you having a boy or a girl? These old wives' tales are a fun (but not scientific!) way to guess the sex of your baby.

Top 14 Pregnancy Fears (and Why You Shouldn Top 14 Pregnancy Fears (and Why You Shouldn't Worry)

Relax! Here, doctors share the truth about your biggest pregnancy worries -- and why they're not as scary as you think.

Week-by-Week Pregnancy Tips Week-by-Week Pregnancy Tips

Over the next nine months you can expect a lot of changes in your body and your life. Here, we help you to navigate those new feelings and to ensure you don't miss any important pregnancy tips along the way from week one to delivery.

15 Pregnancy Power Foods 15 Pregnancy Power Foods

These healthy choices have the nutrients that you and your growing baby need.

What No One Tells You About Labor What No One Tells You About Labor

Here's the truth about labor -- what's normal, what's not, and what to expect.

Ovulation Predictor

Getting pregnant should be simple, right? So why does conception practically require a Blackberry to schedule? Simplify the situation with our free ovulation calendar, which tells you when you're most likely to get pregnant.

Your Developing Baby: Week 28

... Anterior (ROA): In this common fetal body placement before birth, the baby's head faces to the mother... to be in to navigate the birth canal. Left Occiput Anterior (LOA): As with ROA, this common fetal body position makes...

Your Developing Baby: Week 14

What's going on with your baby in pregnancy week 14? Find out all about important pregnancy milestones and exciting fetal development specific to this week of pregnancy!

Your Developing Baby: Week 3

What's going on with your baby in pregnancy week three? Find out all about important pregnancy milestones and exciting fetal development specific to this week of pregnancy!

Pregnancy Weight Gain Calculator

How much weight should you gain while you're pregnant? Keep tabs on your pregnancy pounds with our pregnancy weight gain calculator.

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