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  2. Timeline of human prenatal development - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_human_prenatal...

    The features are consistent with a developmental age of seven weeks (reckoned as the ninth week of pregnancy). Week 8. Gestational age: 7 weeks and 0 days until 7 weeks and 6 days old. 50–56 days from last menstruation. Embryonic age: Week nr 6. 5 weeks old. 36–42 days from fertilization. The embryo measures 13 mm (1 ⁄ 2 in) in length.

  3. Gestational age - Wikipedia

    en.wikipedia.org/wiki/Gestational_age

    For example, if there is a gestational age based on the beginning of the last menstrual period of 9.0 weeks, and a first-trimester obstetric ultrasonography gives an estimated gestational age of 10.0 weeks (with a 2 SD variability of ±8% of the estimate, thereby giving a variability of ±0.8 weeks), the difference of 1.0 weeks between the ...

  4. Estimated date of delivery - Wikipedia

    en.wikipedia.org/wiki/Estimated_date_of_delivery

    Here's the formula to calculate your Estimated Due Date using Naegele's rule : Date of Last Menstrual Period + 7 Days + 9 Calendar Months = Date of Estimated Date of Delivery. Example: LMP = 8 May 2020. +1 year = 8 May 2021. −3 months = 8 February 2021.

  5. A week-by-week guide to common pregnancy symptoms - AOL

    www.aol.com/news/week-week-guide-common...

    Pregnancy Symptoms Week 1. It's a bit of a mind-bender, but you aren't actually pregnant during what doctors call "week one" of pregnancy. Instead, week one starts on the first day of your last ...

  6. Maternal physiological changes in pregnancy - Wikipedia

    en.wikipedia.org/wiki/Maternal_physiological...

    Some degree of weight gain is expected during pregnancy. The enlarging uterus, growing fetus, placenta, amniotic fluid, normal increase in body fat, and increase in water retention all contribute weight gain during pregnancy. The amount of weight gain can vary from 5 pounds (2.3 kg) to over 100 pounds (45 kg).

  7. Gestational sac - Wikipedia

    en.wikipedia.org/wiki/Gestational_sac

    Gestational sac. Contents in the cavity of the uterus seen at approximately 5 weeks of gestational age by obstetric ultrasonography. Artificially colored, showing gestational sac, yolk sac and embryo (measuring 3 mm as the distance between the + signs). The gestational sac is the large cavity of fluid surrounding the embryo.

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