Pregnancy Week by Week

The Fifth Week of Pregnancy

If you have not already done so, when you are five weeks pregnant, this is the time to confirm your pregnancy through a test. Provided you are pregnant, at this point, the embryo is developing as follows:
  • The head and the tail folds become distinct
  • The nervous system begins to develop
  • Two heart tubes are fused in the midline and begin to contract
  • The heart, brain, spinal cord, muscle, and bones begin to develop.
Your baby is now about 0.06 inches long (about the size of an apple seed). By the end of this week, it will have developed a beating heart of its own.
While symptoms vary from woman to woman, as well as from pregnancy to pregnancy, common symptoms that may develop at this point in your pregnancy include:
  • Swollen or tender breasts
  • Morning sickness
  • Frequent need to urinate
  • Fatigue
  • Headaches due to the rise in hormones.
From this week on, you should only be consuming 300 additional calories per day; however, you may need more calories if you're carrying twins, triplets, or more.
You should avoid foods that may be prone to foodborne illnesses such as listeriosis and toxoplasmosis. These foods include:
  • Soft cheeses, such as feta, goat, Brie, Camembert, and blue cheese
  • Unpasteurized milk and juices
  • Raw or undercooked meats, including hot dogs and deli meats
  • Raw eggs or foods containing raw eggs, including mousse and tiramisu
  • Raw shellfish.
(Click 5 Weeks Pregnant for more information.)
Pregnancy and Pain

Week by Week Pregnancy

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