Pregnancy Week by Week

Your 15th Week of Pregnancy

When you're 15 weeks pregnant, your baby is starting to become a lot more mobile and flexible. He or she can bend the elbows and wrists. Your baby is now about 3.7 to 4.1 inches long and weighs about 1.75 ounces.
By this time:
  • Blood vessels can easily be seen through your baby's skin, which is thin and translucent
  • The legs are longer than the arms
  • Eyebrows and scalp hair may appear
  • Hair follicles will begin to produce pigment
  • The bone and marrow of the skeletal system continue to develop.
You may experience symptoms such as:
  • Abdominal (stomach) pain
  • Leaking breasts
  • Nosebleeds
  • Skin changes
  • Hair changes.
(Click 15 Weeks Pregnant for more information.)

Your Pregnancy Week by Week: 16 Weeks

As your baby continues to grow, it is probably getting a bit snugger inside your belly. By the time you are 16 weeks pregnant, your baby is between 4.3 and 4.6 inches long, and weighs about 3 ounces. The fetus can open its mouth, move its lips, and swallow. Additional developments include the following:
  • The fetus may suck its thumb
  • Facial muscles may lead to various expressions, such as squinting and frowning
  • Fine lanugo hairs can be seen on the head
  • The stomach is producing digestive juices
  • The kidneys are producing urine.
At this point in your pregnancy, your doctor may recommend certain screening tests. Some examples of screening tests your healthcare provider may recommend include:
  • A nuchal translucency scan (NT scan) and blood test
  • A multiple marker screen, also called a triple screen or quadruple screen (quad screen), depending on how many blood markers are tested
  • A cystic fibrosis screening test.
(Click 16 Weeks Pregnant for more information.)
Pregnancy and Pain

Week by Week Pregnancy

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