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Week 11

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Your Baby's Development

Pregnancy Calendar

From this week until week 20, your baby will be growing rapidly — increasing in size from about 2 inches (5 cm) to about 8 inches (20 cm) from crown to rump. To accommodate all this growth, the blood vessels in the placenta are increasing in both size and number to provide the baby with more nutrients.

Facial development continues as the ears move toward their final position on the sides of the head. If you saw a picture of your baby now, you'd think you had a genius on your hands — the baby's head accounts for about half of the body length!

Although your baby's reproductive organs are developing rapidly, the external genitals of boys and girls appear somewhat similar until the end of week 11. They will be clearly differentiated by week 14.

Week 11

Your Body

Nourishing your baby usually requires that you gain weight — and in most cases, the recommended weight gain is 25 to 35 pounds (11.33 to 15.87 kg) over the course of the pregnancy. If you were overweight or underweight before pregnancy, your health care provider may have different recommendations for weight gain.

Your health care provider may offer you a "first trimester screening test" which combines ultrasound with a blood test to determine whether your baby is at risk for (not whether your baby has) specific chromosomal abnormalities, such as Down syndrome. An abnormal result does not necessarily mean that your baby has a condition — but it may mean more testing is required. Talk to your health care provider about the risks and advantages of this test.

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License

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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Summer 2014: Good Growing Newsletter

In This Issue

  • Understanding the Power and Influence of Role Models
  • Legal Marijuana Means Greater Poisoning Risks for Children
  • Why Choose Pediatric Emergency Care?

Download Summer 2014 (PDF)

Videos

Miracle Makers 2014 3:07:00Expand
6.6.14

The 30th annual Miracle Makers fundraising special aired on KOMO 4 TV on June 6, 2014. The special takes us on a journey through the hopes, fears, victories and challenges facing patients at Seattle Children's. Cosponsored by Costco Wholesale and KOMO 4. 

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Overcoming the Odds: A KING 5 TV Children's HealthLink Special 0:44:45Expand
12.30.13

In the spirit of the holidays, patients, parents and doctors share inspirational stories of healing and hope. From surviving heart failure and a near-death drowning to battling a flesh-eating disease, witness how the impossible became possible thanks to the care patients received at Seattle Children's Hospital.

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Miracle Season 2013 0:57:06Expand
12.11.13

Miracle Season, hosted by Steve Pool and Molly Shen, aired Dec. 8, 2013, on KOMO 4 TV. The annual holiday special celebrates the remarkable lives of Seattle Children's patients.

Play Video