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The Pregnancy Hub

24 weeks pregnant

Get to know your growing baby and the changes you may be feeling.

Choose your week

Week 24

Know your due date?

Enter the due date from your care team to find your estimated week today. Your date stays in this browser tab.

Illustration of an ear of corn

Second trimester

About the size of

an ear of corn

Approximate length

11.8 in / 30 cm Head to heel

Your baby

Your baby's body is becoming more proportionate, but important growth and organ development are still ahead. A baby born this early would need specialized medical care. The ear-of-corn illustration helps show approximate size; it is not a measure of readiness for birth or a prediction of how an individual baby would do.

Your body

Your appetite, bump size and energy may differ from someone else's at the same stage. Neither appearance nor symptoms can tell you whether you have gestational diabetes. Screening is part of prenatal care because a condition may need attention even when you feel well. Ask about changes you notice rather than trying to interpret them from an online comparison.

This week

Preparing for glucose screening

Gestational diabetes screening commonly takes place between 24 and 28 weeks, though your clinician may recommend a different plan based on your history. Ask which test you are having, whether you need to prepare or fast, how long it may take and how results will be shared. Instructions differ between tests, so do not assume a friend's preparation applies to yours. A screening result may mean another test is needed rather than confirming a diagnosis immediately. If a result is abnormal, ask what it means and what the next step will be.

Explore prenatal care

Looking ahead

A question for your next visit

Which glucose test am I having, how should I prepare, and how will I receive the result?

Browse pregnancy weeks

A little context for these comparisons

These are approximate sizes for each week, not measurements of your baby. Babies and produce both come in different sizes, and the illustrations are not shown to scale.

Before week 20, length is measured from head to bottom. From week 20, it includes the legs, from head to heel. That change explains the jump in length between weeks 19 and 20.

When to get help

If your baby’s usual movements slow down, stop, or change, contact your maternity care team right away.

Seek medical care right away for warning signs such as a severe or persistent headache, vision changes, chest pain, trouble breathing, severe belly pain, vaginal bleeding, leaking fluid, or thoughts of harming yourself or your baby. These are examples, not a complete list. If you cannot reach your care team, seek urgent medical care. Call 911 for a medical emergency.

Read the CDC urgent maternal warning signs (opens in a new tab)
About this guide

Approximate measurements and development information draw on the NHS weekly guides. Linked US health resources support care and preparation topics. The topics are suggestions for discussion, not a schedule of required appointments or tests. Your own care plan may differ.

Every pregnancy is different. Your care team can help you understand your baby’s growth and any symptoms you’re experiencing.