This week: Your baby finds a home in your uterus, plus more positive results for you.


Mom's Tip of the Week

Did you know...?

Your baby's organs will begin to form next week. That’s why, at 4 weeks pregnant, it is an especially critical time to make sure you’re getting all the vitamins and minerals you need. Check out Pregnancy Nutrition: First Trimester Pointers and remember that a prenatal supplement is great nutritional support.

Your Baby at 4 Weeks Pregnant

What's Happening in There

  • Your baby is the size of a poppy seed.
  • Your baby at 4 weeks is still a blastocyst. The blastocyst is a complex ball of cells with a hard outside shell and a soft inner shell. The outer layer is responsible for implantation in your uterus and will eventually develop into the placenta. The inner portion will develop into the embryo.
  • Your baby implants in your uterine wall. This week, the blastocyst implants itself in your uterus. This is a big milestone in your pregnancy. In fact, your uterus has been preparing for this moment: The lining is thick with blood and ready to nourish the embryo.
  • You may have breakthrough bleeding. Some women experience a little bleeding, often mistaken as a period, when the blastocyst implants in the uterine wall.
  • You may get a positive result on a pregnancy test. This may be possible toward the end of week 4. Once you have that result, be sure to begin scheduling prenatal visits with your doctor.

Baby Brain Waves

Your Baby’s Brain Is Developing

At 4 weeks pregnant your baby begins drawing nutrients from your uterine wall—and therefore from the foods that you are eating. To help your baby's brain develop, you'll need 71 grams of protein during the second half of pregnancy. Taking in too little of this key nutrient, along with an adequate caloric intake, can affect your baby's overall development.

Pregnancy Health

Real Issues, Real Solutions

The issue: Taking in the proper amounts of nutrients is vital to your health and your baby's development, but it's equally important to know what foods to pass up during your pregnancy.

The solution: Check out a clear guide to foods to avoid for moms-to-be.

Read More

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