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The Pregnancy Hub

36 weeks pregnant

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

Choose your week

Week 36

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 romaine lettuce

Third trimester

About the size of

a romaine lettuce

Approximate length

18.7 in / 47.4 cm Head to heel

Your baby

Your baby continues developing the coordination needed for sucking and feeding after birth. Growth and maturation are still underway; a weekly size estimate cannot tell you whether a particular baby would need support if born now. The romaine-lettuce illustration is an approximate length comparison, not a readiness assessment.

Your body

Your baby may settle lower in the pelvis, although this does not happen on a fixed schedule. More pelvic pressure or bathroom trips do not by themselves tell you when labor will begin. Keep reporting changes in your baby's usual movements and any symptoms that concern you, rather than assuming late-pregnancy discomfort explains everything.

This week

Confirming late-pregnancy tests and contacts

Ask about group B strep screening, which is generally done during the 36th or 37th week in US care. The sample is collected with a vaginal and rectal swab. A positive result helps the team plan antibiotics during labor to reduce the risk of infection in the newborn; it does not mean you feel sick. Confirm how your result will reach the birth team. Also write down your labor contact number, the intended arrival location and what to do outside office hours. Your own clinician should provide these arrangements rather than a general weekly guide.

Explore birth preparation

Looking ahead

A question for your next visit

What is my group B strep testing plan, and which number and location should I use when labor starts?

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.