{"id":15421,"date":"2025-11-21T07:54:59","date_gmt":"2025-11-21T12:54:59","guid":{"rendered":"https:\/\/americacellbank.com\/motherhood-world\/pregnancy-week-by-week-a-complete-guide-from-month-1-to-delivery\/week-5-of-pregnancy-the-gestational-sac-and-the-first-gynecologist-visit\/"},"modified":"2026-07-03T08:58:49","modified_gmt":"2026-07-03T13:58:49","slug":"week-5-of-pregnancy-the-gestational-sac-and-the-first-gynecologist-visit","status":"publish","type":"page","link":"https:\/\/americacellbank.com\/en\/motherhood-world\/pregnancy-week-by-week-a-complete-guide-from-month-1-to-delivery\/week-5-of-pregnancy-the-gestational-sac-and-the-first-gynecologist-visit\/","title":{"rendered":"Week 5 of Pregnancy: The Gestational Sac and the First Gynecologist Visit"},"content":{"rendered":"\t\t
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World
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In the fifth week of pregnancy, the embryo begins to develop rapidly, and the heart starts to beat, although it cannot yet be heard. The gestational sac enlarges, and the umbilical cord begins to form. Although the pregnancy is still very early, hormones are rapidly increasing, causing significant changes in the woman’s body. At this stage, a pregnancy test should yield a positive result if performed. Many women do not yet experience major physical changes, but the body is working hard to adapt to the new life that is beginning to form. <\/p><\/div><\/div><\/div><\/div><\/div><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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Symptoms<\/span>

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The most common symptoms in week 5 of pregnancy include morning sickness, extreme fatigue, breast changes such as tenderness or swelling, and an increase in urinary frequency. Some women may also experience mood swings due to increased hormones, and in some cases, they might notice slight spotting, known as implantation bleeding, when the fertilized egg attaches to the uterine wall. It is important to remember that every pregnancy is unique, and symptoms can vary from one woman to another.

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Embryo size<\/span>

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The embryo measures approximately 1.5 to 2.5 mm, roughly the size of a sesame seed. At this stage, the heart begins to form and beat very early, and the neural tube and the first signs of major organs begin to develop.

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What should you do?<\/span>

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It’s a good time to start taking even better care of your health and preparing for the baby’s development. Here are some key recommendations: <\/p>