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6 Weeks Pregnant: Your Baby’s Development

Closed for business. An important milestone occurs this week: The neural tube starts to close over what will become your little one's spinal cord.

Face forward. This week, tiny folds of tissue are developing into what will eventually become your little one's chin, cheeks, and jaw. The areas that will be the eyes and nose have started to project as bumps, while the ear structure is pushing inward.

Picking up the beat. The heart tube is gradually growing into four primitive chambers and starts to beat like a tiny drum. Other major organs, such as the kidneys and liver, are also beginning to take shape. The lungs each exist as a single tube and will form into pouch-like structures. They will continue to blossom over the next few months to get ready for your little one's first breath of air.

embryo Week 6

6 Weeks Pregnant: Your Symptoms

Conditions with a cause. Your breasts may be tingling or tender because of increased blood flow; this is just your body preparing for breastfeeding. Be sure to wear a supportive bra, even at night if it helps. You may also experience constipation because of an increase in progesterone, which slows down the digestive tract. To deal with this problem, exercise regularly, eat a balanced diet with high-fiber foods, and drink plenty of water.

Losing your lunch? About 70 percent of pregnant women experience some morning sickness, which is at its worst during the first trimester. Nausea is triggered by hCG, the pregnancy hormone that's secreted right after implantation. Though you can't prevent morning sickness, there are measures you can take to help relieve the symptoms — learn more here.

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