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Week 6

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Your Baby's Development

Pregnancy Calendar

By week 6, your baby’s brain and nervous system are developing at a rapid pace. Optic vesicles, which later form the eyes, begin to develop this week on the sides of the head, as do the passageways that will make up the inner ear.

Your baby's heart will begin to beat around this time, and it may even be detected on ultrasound examination. And the beginnings of the digestive and respiratory systems are forming, too. Small buds that will grow into your baby's arms and legs also appear this week.

Because their legs are curled up against the torso for much of the pregnancy, making a full-length measurement difficult, babies often are measured from the crown to rump rather than from head to toe. This week, your baby only measures 0.08 to 0.2 inches (2 to 5 millimeters) from crown to rump!

Week 6

Your Body

Common pregnancy complaints may hit in full force this week. You may feel extreme fatigue as your body adjusts to the demands of pregnancy. And tender, aching breasts and nausea and vomiting (morning sickness) may leave you feeling less than great. Despite its name, morning sickness can occur at any hour or all day, so don't be surprised if your queasy stomach doesn't pass by noon. Nausea isn't the only thing that has you running to the toilet, though — hormonal changes and other factors, such as your kidneys working extra hard to flush wastes out of your body, cause you to urinate more frequently, too.

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Note: All information is for educational purposes only. For specific medical advice, diagnoses and treatment, consult your doctor.

© 1995–2014 The Nemours Foundation/KidsHealth. All rights reserved.

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Spring 2014: Good Growing Newsletter

In This Issue

  • Cold Water Shock Can Quickly Cause Drowning
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  • Bystanders Can Intervene to Stop Bullying

Download Spring 2014 (PDF)

Videos

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