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Pregnancy: Overview

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Pregnancy is a period of up to 41 weeks typically in which a woman carries a fetus inside of her. In support of its goal to improve the health of women and children, the NICHD leads and supports research and training to promote healthy pregnancies, focusing on the important events that occur before, during, and after pregnancy. 

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Common Name

  • Pregnancy

Medical or Scientific Terms

  • Gravid: pregnant
  • Primigravida: woman in her first pregnancy
  • Multigravida: pregnant woman who has been pregnant two or more times
  • Multiparous: woman who has delivered more than one infant
  • Nulliparous: woman who has never been pregnant or has never completed a pregnancy beyond 20 weeks
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