Baby by Week
Week 11

Your week 11 guide

The fetus is growing quickly and becoming more active, even though movement is still too small to feel.
Trimester

1

Month

3

Weeks left

29

Size at a glance

Comparison
Fig
Length
3.8–5.1 cm
Weight
0.25 oz
Measurements are approximate. Healthy babies grow at different rates.

Baby development

Brain connections are forming at a fast pace.
The ears are moving toward the sides of the head and facial structure is refining.
The liver is making red blood cells while external genitals continue developing.

Your body

Morning sickness may begin easing, but bloating and gas can remain.
Frequent urination continues as blood flow through the kidneys increases.
Breasts may feel larger or more sensitive and a small bump may be visible.

This week's checklist

Review upcoming tests and appointments with your clinician.
Start a registry or planning list only if it feels useful.
Choose comfortable clothing and make room for rest.

Call your care team

Report any bleeding during pregnancy.
Seek urgent help for heavy bleeding, severe abdominal pain, shoulder pain, fainting, dehydration, or fever.

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.