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The Pregnancy Hub

38 weeks pregnant

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

Choose your week

Week 38

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 a stalk of rhubarb

Third trimester

About the size of

a stalk of rhubarb

Approximate length

19.6 in / 49.8 cm Head to heel

Your baby

Much of your baby's fine body hair has disappeared, although some may remain at birth. Material called meconium is collecting in the intestines and usually becomes the first bowel movement after birth. Your baby should continue moving in their usual pattern. A later pregnancy week is not a reason for movements to slow or stop.

Your body

You may feel increasingly ready for birth, or you may feel uncertain about what happens next. Both practical discomfort and the waiting itself can be tiring. Ask for help with symptoms that make daily life difficult. Avoid interpreting every sensation as a prediction; the care plan is based on your pregnancy as a whole, not a single sign.

This week

Discussing the plan beyond your due date

Before the due date arrives, ask what the plan would be if labor has not begun. Discuss when you would next be seen, whether additional monitoring might be recommended and when induction would enter the conversation. Ask about the reasons, benefits, risks and alternatives in your own circumstances rather than treating a particular date as the same deadline for everyone. Confirm how you will receive instructions if the plan changes. Do not wait for the next scheduled assessment if movement decreases, your water may have broken or another urgent concern develops.

Explore birth preparation

Looking ahead

A question for your next visit

What is our follow-up plan if labor has not started by my due date?

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.