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Systems of fertility awareness rely on observation of changes in one or more of the primary fertility signs (basal body temperature, cervical mucus, and cervical position), tracking menstrual cycle length and identifying the fertile window based on this information, or both.
It is not known if historical cultures were aware of what part of the menstrual cycle is most fertile. In the year 388, Augustine of Hippo wrote of periodic abstinence. . Addressing followers of Manichaeism, his former religion, he said, "Is it not you who used to counsel us to observe as much as possible the time when a woman, after her purification, is most likely to conceive, and to abstain ...
In the days leading up to ovulation the cervix responds to oestrogen by producing mucus capable of sustaining sperm survival. This mucus leaves the vagina as the woman is in an upright position. The mucus is observed through the sensation at the vulva and by looking at any cervical secretions.
Ovulation is an important part of the menstrual cycle in female vertebrates where the egg cells are released from the ovaries as part of the ovarian cycle. In female humans ovulation typically occurs near the midpoint in the menstrual cycle and after the follicular phase. Ovulation is stimulated by an increase in luteinizing hormone (LH).
The speed of ovulation is periodic and impacts the length of a menstrual cycle. After ovulation, the egg cell travels through the fallopian tube toward the uterus. If fertilization is going to occur, it often happens in the fallopian tube; the fertilized egg can then implant on the uterus's lining.
The Couple to Couple League was founded in 1971 by John and Sheila Kippley, and lay Catholics, with the help of Dr. Konald Prem. The League was the first organization to teach a symptoms-based method of fertility awareness that relied on all three primary fertility signs: temperature, mucus, and cervical position. [1]
In the fertility awareness-based method a woman who has a predictable and consistent menstrual cycle tracks the days that she is fertile. The typical woman has approximately 9 fertile days a month and either avoids intercourse on those days or uses an alternative birth control method for that period of time. The failure rate is between 2-23%.
Cervical dilation in centimeters; Cervical effacement as a percentage; Cervical consistency by provider assessment/judgement; Cervical position; Fetal station, the position of the top of the fetal head in relation to the pelvic bones, specifically the ischial spines. The Bishop score grades patients who would be most likely to achieve a ...