{"id":10195,"date":"2021-04-15T06:05:21","date_gmt":"2021-04-15T10:05:21","guid":{"rendered":"https:\/\/wp.oviahealth.com\/guide\/10195\/week-4-pregnancy\/"},"modified":"2024-03-06T16:41:50","modified_gmt":"2024-03-06T21:41:50","slug":"week-4-pregnancy","status":"publish","type":"article","link":"https:\/\/www.oviahealth.com\/guide\/10195\/week-4-pregnancy\/","title":{"rendered":"4 weeks pregnant"},"content":{"rendered":"
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For more information about week 4 in a twin or multiple pregnancy, tap here<\/a>.<\/p>\n

While you haven\u2019t been pregnant for very long, some big changes are happening for both you and your baby in week four!\u00a0<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n

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How\u2019s Baby<\/span>?<\/strong><\/h4>\n

Baby<\/span> is now as big as a poppyseed and has entered the embryonic stage of pregnancy! Around this time, the neural tube, which develops into the brain and spinal cord, is forming. Baby<\/span> is also made up of three distinct layers right now: the endoderm, which will become their lungs and most of the vital organs; the mesoderm, which will grow into the heart and skeleton; and the ectoderm, which will make up the nervous system.<\/p>\n

And not only are you growing a tiny human, you\u2019re also growing an organ that will help nourish your little one throughout the next several months! Your placenta is starting to form, spreading its roots into your uterine wall before it begins its task of transporting nutrients to the baby and carrying away waste. For now, while the placenta settles in and develops, Baby<\/span> is being nourished by the yolk sac from your egg, and the placenta is busy reaching out and making a connection with your blood supply.<\/p>\n

What’s new\u00a0with you?<\/strong><\/h4>\n

By the fourth week of pregnancy, many people start to have an inkling that they\u2019re pregnant, whether due to bloating caused by the hormone progesterone, mild discomfort from the fertilized egg implanting in your uterus, or other side effects that are starting to pop up. You could start to experience mood swings from rising hormone levels. This may not be fun, but it is normal. This increase in estrogen and progesterone also reduces the speed with which your digestive system works in an effort to maximize nutrient absorption and, most effectively, supply and nurture your growing baby. You may experience aversions to certain foods or constipation as a result. And have you started taking a prenatal vitamin yet? If not, this is the time to start.<\/span><\/p>\n

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Reviewed by the Ovia Health Clinical Team<\/h5>\n
Read more<\/span><\/h5>\n
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