Menstruation and Pregnancy
Menstruation is the most visible phase of the menstrual cycle, and corresponds closely with the hormonal cycle, and is therefore used as the limit between cycles; Menstrual cycles are counted from the first day of menstrual bleeding, a point in time commonly termed last menstrual period (LMP). The time from LMP until ovulation is, on average, 14.6 days, but with substantial variation both between people and between cycles in any single person, with an overall 95% prediction interval of 8.2 to 20.5 days.
During pregnancy and for some time after childbirth, menstruation is normally suspended; this state is known as amenorrhoea, i.e. absence of the menstrual cycle. If menstruation has not resumed, fertility is low during lactation. The average length of postpartum amenorrhoea is longer when certain breastfeeding practices are followed; this may be done intentionally as birth control.
Read more about this topic: Menstruation
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Famous quotes containing the words pregnancy and/or menstruation:
“If pregnancy were a book they would cut the last two chapters.”
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