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Pregnancy Calendar

Week 10: Your pregnancy

Week 10: Your pregnancy

Your baby's growth: Brain

This week your baby's brain will experience enormous growth. The rest of her body is growing too; she's now about the size of a small plum and weighs about half an ounce.

This week marks your baby's last week as an embryo; next week she'll officially become a fetus.

But this week there's still a lot of activity going on:

  • Teeth. Tooth buds for baby teeth will begin forming inside the mouth.
  • Reproductive organs and external genitals. They will be formed, although it will still be too early to determine gender.
  • Nervous system. This will continue to develop.
  • Internal organs. Many of the internal organs will begin to function.
  • Intestines. They have been developing inside the umbilical cord and have begun moving into the abdominal cavity.
  • Taste buds. They will begin to appear on the surface of the tiny tongue.
  • Eyelids. They're almost closed over the tiny eyes, which have already developed some of the color they'll have at birth.
  • Upper lip. This will form completely.
  • Joints. Most of the joints will form, including elbows, wrists, knees, shoulders and ankles.

What's happening with you

  • You're still in regular clothes. Despite your baby's growth spurt, you can probably still wear your regular clothes. Very little of your total pregnancy weight gain—usually between 25 and 35 pounds if pre-pregnancy weight was normal—occurs during the first three months.
  • Fatigue and nausea. If you're still feeling tired and a little sick, try to focus on the fact that in just a few more weeks, you'll probably be feeling a lot better!

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