Menstrual Phases

The menstrual cycle will be divided into 5 phases to simplify timing: proliferative, ovulation, secretory, premenstrual and menstruation.

Follicular phase has been divided up into menstruation and proliferative phases. Menstruation is when the uterus lining is shed. The proliferative phase is from the end of menstruation until ovulation: this is the time when the uterus rebuilds to prepare for potential pregnancy.

Luteal phase has been divided into secretory and premenstrual phases. The corpus luteum which produces progesterone is present during the secretory phase. Premenstrual phase begins after the corpus luteum disintegrates, and it ends at the beginning of menstruation.

Determining Menstrual Phase

Often, menstrual phases are synchronized with the Moon's phases, but it is not always so. Ovulation is commonly associated with a Full Moon, and menstruation usually starts around New Moon.

Cervical mucus is a better indicator of ovulation. During secretory phase, progesterone can raise body temperature. See the links under resources for more.

Symptoms

The symptom of hot-flashes is possibly associated with abnormally high body temperature. An excessive imbalance of progesterone or prolactin should be avoided. Decreased fertility may underlie symptoms indicating increased progesterone or prolactin.

Premenstrual syndrome symptoms are likely from a sudden decrease in progestogen synthesis.

Lunar Calendar

≈ First Quarter
≈ 64.3% illuminated
8 days 17 hours old
waxing
UTC 2018 Jul 21

2018 Menstrual Calendar
	1st Q	Full		Last Q		New
Proliferative		Ovulation	Secretory		Premenstrual	Menstruation
				Jul 6		Jul 13
	Jul 19	Jul 27		Aug 4		Aug 11
	Aug 18	Aug 26
2018 July 21 UTC

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References:

Menstruation. Encyclopedia Britannica. 2017. .
Menstrual Cycle - Proliferative Phase, Secretory Phase, Menstruation. JRank. .
How to Predict Ovulation by Charting Your Basal Body Temperature and Cervical Mucus. Baby Center. .

Resources:

Menstrual Cycle - Proliferative Phase, Secretory Phase, Menstruation. JRank. http://science.jrank.org/pages/4235/Menstrual-Cycle.html.
How to Predict Ovulation by Charting Your Basal Body Temperature and Cervical Mucus. Baby Center. https://www.babycenter.com/chart-basal-body-temperature-and-cervical-mucus#articlesection3.