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  1. Pregnancy - NICHD - Eunice Kennedy Shriver National Institute of Child ...

    Dec 30, 2020 · The events that lead to pregnancy begin with conception, in which a sperm penetrates an egg. The fertilized egg (called a zygote) then travels through the woman's fallopian tube to the …

  2. Trying to conceive - Office on Women's Health

    Sep 26, 2025 · How do you figure out when you're fertile and when you're not? Wondering if you or your partner is infertile? Read on to boost your chances of conception

  3. About Pregnancy | NICHD - NICHD - Eunice Kennedy Shriver National ...

    Oct 28, 2013 · Pregnancy is the term used to describe the period in which a fetus develops inside a woman's womb or uterus.Pregnancy usually lasts about 40 weeks, or just over 9 months, as …

  4. Feb 19, 2025 · Background President Donald Trump issued Executive Order 14168 on January 20, 2025, entitled “Defending Women from Gender Ideology Extremism and Restoring Biological Truth to …

  5. Contraception - World Health Organization (WHO)

    Nov 28, 2025 · limited access to contraception a limited choice of methods a fear or experience of side-effects cultural or religious opposition poor quality of available services gender-based barriers.

  6. Stages of pregnancy - Office on Women's Health

    Sep 26, 2025 · Pregnancy lasts about 40 weeks, counting from the first day of your last normal period. The weeks are grouped into three trimesters.

  7. Women's Health Infographic: Conception (Text Alternative)

    Dec 30, 2017 · 6 Things to Know About Conception Graphic: A diagram indicating that peak fertility occurs between days 12 and 14 of an average 28-day menstrual cycle. Ovulation occurs at about …

  8. Eunice Kennedy Shriver National Institute of Child Health and Human ...

    Apr 9, 2020 · The fluid in the peritoneum contains substances that can negatively affect the functions of the egg, sperm, and fallopian tubes. Chemical changes in the lining of the uterus that occur as a …

  9. Eunice Kennedy Shriver National Institute of Child Health and Human ...

    Sep 12, 2016 · Barrier —physically interferes with conception by keeping the egg and sperm apart Hormonal —regulates ovulation by changing the balance of hormones related to development and …

  10. What are some common signs of pregnancy? - NICHD

    Dec 30, 2017 · The primary sign of pregnancy is missing a menstrual period or two or more consecutive periods, but many women experience other symptoms of pregnancy before they miss a period.