pregnancy | week by week
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The tip of a pen
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Week 5: Your Baby’s Taking Shape
Your baby’s circulatory system starts to develop.
After weeks of rapid cell development, your baby’s taking on a more distinct form.
Here’s what’s happening inside:
- Your baby’s heart and circulatory system take shape -- a bulge indicates where his heart is developing. By the end of the fifth week of pregnancy, your baby’s earliest blood vessels form.
- Around the fifth week of pregnancy, your baby’s heart begins to beat and might be visible on an ultrasound.
- The umbilical cord replaces the yolk sac. The umbilical cord works with the placenta to bring nutrition and oxygen to your baby and remove waste.
- Your baby’s reproductive organs begin to develop internally at five weeks, though they likely won’t be visible until about week 14.
- At five weeks, your baby is the length of the tip of a pen, about 1/17 inch, and growing rapidly every day.
Simple switches make for better health.
Focusing on whole grains is one easy way to boost nutrition during pregnancy.
A few easy ideas:
- Trade white bread for whole-grain bread. This simple switch adds more fiber to your diet and increases your intake of magnesium and chromium. Additionally, you’ll get more zinc, copper, vitamin E and vitamin B6.
- Trade sugary cereals for whole-grain cereals, white rice for brown rice, and traditional pasta for whole-wheat pasta.
- Try wild rice or barley in soups, stews, casseroles and salads.
- Look for products that list whole grains (such as whole-wheat flour) first in the ingredients list