Baby by Week
Week 27

Your week 27 guide

The second trimester ends as hearing, taste, lungs, liver, and immunity continue developing.
Trimester

2

Month

7

Weeks left

13

Size at a glance

Comparison
Cauliflower
Length
38 cm head to heel
Weight
2 lb
Measurements are approximate. Healthy babies grow at different rates.

Baby development

Measurements now commonly use head-to-heel length.
Flavors from your diet reach the amniotic fluid the fetus swallows.
Familiar voices may prompt a response, though sound remains muffled in the womb.

Your body

Bladder leaks, constipation, swelling, bleeding gums, congestion, and an itchy belly can occur.
Shoes may feel tighter as feet and ankles swell.
Movement patterns are often easier to recognize.

This week's checklist

Schedule childbirth and newborn-care classes if desired.
Refine birth preferences and discuss them with your care team.
Choose comfortable, supportive footwear.

Call your care team

Call promptly for bleeding, leaking fluid, regular painful contractions, fever, or a clear movement change.
Seek urgent help for severe headache with vision changes, sudden facial or hand swelling, chest pain, fainting, or severe abdominal pain.

Medical information, not medical advice

Every pregnancy is different. Use this guide for general education and follow the advice of your own maternity care team. Do not delay urgent care because of something you read here.