How your baby's growing:

  • Get ready for a growth spurt. In the next few weeks, your baby will double his weight and add inches to his length. Right now, he's about the size of an avocado: 4 1/2 inches long (head to rump) and 3 1/2 ounces.
  • His legs are much more developed, his head is more erect than it has been, and his eyes have moved closer to the front of his head.
  • His ears are close to their final position, too. The patterning of his scalp has begun, though his locks aren't recognizable yet.
  • He's even started growing toenails. And there's a lot happening inside as well. For example, his heart is now pumping about 25 quarts of blood each day, and this amount will continue to increase as your baby continues to develop.
See what your baby looks like this week
Pregnancy Week 16-01.jpg
Note: Every baby develops a little differently even in the womb. Our information is designed to give you a general idea of your baby's development.

How your life's changing:

  • The top of your uterus is about halfway between your pubic bone and your navel, and the round ligaments that support it are thickening and stretching as it grows.
  • You're probably feeling a whole lot better as you settle into pregnancy, too. Less nausea, fewer mood swings, and "glowing" skin contribute to an overall sense of well-being.
  • Soon you'll experience one of the most wonderful moments of pregnancy feeling your babymove. While some women notice "quickening" as early as 16 weeks, many don't feel their baby move until about 18 weeks or more. (And if this is your first baby, don't be too impatient you may not be aware of your baby's movements until 20 weeks or so.)
  • The earliest movements may feel like little flutters, gas bubbles, or even like popcorn popping. Over the following weeks they'll grow stronger and you'll be able to feel them much more frequently.

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