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  2. 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 ...

  3. Signs and symptoms of pregnancy - Wikipedia

    en.wikipedia.org/.../Signs_and_symptoms_of_pregnancy

    Although described as "morning sickness," pregnant women can experience this nausea any time of day or night. The exact cause of morning sickness remains unknown. Nausea and vomiting in pregnancy is typically mild and self-limited, resolving on its own by the 14th week of pregnancy. Other causes should also be ruled out when considering treatment.

  4. Pregnancy - Wikipedia

    en.wikipedia.org/wiki/Pregnancy

    A pregnancy is considered term at 37 weeks of gestation. It is preterm if less than 37 weeks and post-term at or beyond 42 weeks of gestation. The American College of Obstetricians and Gynecologists have recommended further division with early term 37 weeks up to 39 weeks, full term 39 weeks up to 41 weeks, and late term 41 weeks up to 42 weeks ...

  5. Morning sickness - Wikipedia

    en.wikipedia.org/wiki/Morning_sickness

    About 10% of women still have symptoms after the 20th week of pregnancy. [2] A severe form of the condition is known as hyperemesis gravidarum and results in weight loss. [1] [6] The cause of morning sickness is unknown but may relate to changing levels of the hormone human chorionic gonadotropin. [2]

  6. All the Common Signs That Your Period Is Coming Tomorrow - AOL

    www.aol.com/lifestyle/common-signs-period-coming...

    These are the physical and emotional symptoms you may feel right before your period. “Pre-period symptoms like breast tenderness, nausea, bloating, irritability, and cramping are solid clues ...

  7. Hyperemesis gravidarum - Wikipedia

    en.wikipedia.org/wiki/Hyperemesis_gravidarum

    She died in 1855 while four months pregnant, having been affected by intractable nausea and vomiting throughout her pregnancy, and was unable to tolerate food or even water. [ 50 ] Catherine, Princess of Wales was hospitalised due to hyperemesis gravidarum during her first pregnancy, and was treated for the same condition during the subsequent two.

  8. Maternal physiological changes in pregnancy - Wikipedia

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

    It begins between the 4 and 8 weeks of pregnancy and usually subsides by 14 to 16 weeks. The exact cause of nausea is not fully understood but it correlates with the rise in the levels of human chorionic gonadotropin, progesterone, and the resulting relaxation of smooth muscle of the stomach.

  9. Preterm birth - Wikipedia

    en.wikipedia.org/wiki/Preterm_birth

    In humans, the usual definition of preterm birth is birth before a gestational age of 37 complete weeks. [94] In the normal human fetus, several organ systems mature between 34 and 37 weeks, and the fetus reaches adequate maturity by the end of this period. One of the main organs greatly affected by premature birth is the lungs.