Baby by Week
Week 6

Your week 6 guide

Growth is rapid as the early heart, face, limbs, and internal systems take shape.
Trimester

1

Month

2

Weeks left

34

Size at a glance

Comparison
Lentil
Length
0.5–0.6 cm
Weight
Very small
Measurements are approximate. Healthy babies grow at different rates.

Baby development

Cardiac activity may now be visible on an ultrasound, depending on dating and equipment.
Small buds mark where arms and legs will grow.
The digestive and respiratory tracts are beginning to develop.

Your body

Nausea, food aversions, tender breasts, bloating, and fatigue are common.
Hormonal shifts can bring strong mood changes.
Your abdomen may not look pregnant yet.

This week's checklist

Schedule prenatal care if you have not already.
Review foods, drinks, medicines, and activities with your care team.
Try small, regular meals and steady hydration if nausea is manageable.

Call your care team

Call if vomiting is persistent or you cannot keep fluids down.
Seek urgent help for heavy bleeding, severe pain, shoulder pain, fainting, fever, or feeling very unwell.

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.