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  2. Gestational age - Wikipedia

    en.wikipedia.org/wiki/Gestational_age

    Other algorithms take into account other variables, such as whether this is the first or subsequent child, the mother's race, age, length of menstrual cycle, and menstrual regularity. In order to have a standard reference point, the normal pregnancy duration is assumed by medical professionals to be 280 days (or 40 weeks) of gestational age.

  3. Can you actually get pregnant during your period? What an OB ...

    www.aol.com/actually-pregnant-during-period-ob...

    The length of the menstrual cycle will vary from person to person. The average cycle lasts around 28 days, ... The likelihood of getting pregnant on your period will depend on a couple of ...

  4. Menstrual cycle - Wikipedia

    en.wikipedia.org/wiki/Menstrual_cycle

    Menstrual cycle The menstrual cycle is a series of natural changes in hormone production and the structures of the uterus and ovaries of the female reproductive system that makes pregnancy possible. The ovarian cycle controls the production and release of eggs and the cyclic release of estrogen and progesterone. The uterine cycle governs the preparation and maintenance of the lining of the ...

  5. What It Means If Your Period Came Early This Cycle - AOL

    www.aol.com/normal-length-cycle-could-anywhere...

    A typical menstrual cycle is thought to last exactly 28 days—however, it can actually land anywhere between 21 and 35 days, says to Rachel High, DO, a urogynecologist at the Center for ...

  6. CycleBeads - Wikipedia

    en.wikipedia.org/wiki/CycleBeads

    CycleBeads, a color-coded string of beads that represents the days of a woman's cycle, helps an individual use the Standard Days Method, by helping her track her cycle days. Starting the first day of her period, she moves a band to the red bead then to a new bead every day. The color of the bead lets her know if today is a day she is highly ...

  7. Why do doctors always ask about your last menstrual period ...

    www.aol.com/lifestyle/why-doctors-always-ask...

    Knowing the first day of a woman’s last menstrual period is useful in other ways. Dr. Arlene Go, an ob-gyn and specialist fellow studying endometriosis at Hera Biotech, tells Yahoo Life that it ...