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Gestational age is contrasted with fertilization age, which takes the date of fertilization as the start date of gestation. There are different approaches to defining the start of a pregnancy. This definition is unusual in that it describes women as becoming "pregnant" about two weeks before they even had sex.
In medicine, the definition of fertility is "the capacity to establish a clinical pregnancy." [24] Women have hormonal cycles which determine when they can achieve pregnancy. The cycle is approximately twenty-eight days long, with a fertile period of five days per cycle, but can deviate greatly from this norm.
Their formal conception in Islamic society has been derived from a number of hadiths. It is said that during the time of Muhammad, after the Hijrah , the first waqf was composed of a grove of 600 date palms.
Pre-conception counseling is care that is provided to a woman or couple to discuss conception, pregnancy, current health issues and recommendations for the period before pregnancy. [87] Prenatal medical care is the medical and nursing care recommended for women during pregnancy, time intervals and exact goals of each visit differ by country. [88]
In vitro fertilisation (IVF) is a process of fertilisation in which an egg is combined with sperm in vitro ("in glass"). The process involves monitoring and stimulating a woman's ovulatory process, then removing an ovum or ova (egg or eggs) from her ovaries and enabling a man's sperm to fertilise them in a culture medium in a laboratory.
The days in which a woman is most fertile can be calculated based on the date of the last menstrual period and the length of a typical menstrual cycle. [4] The few days surrounding ovulation (from approximately days 10 to 18 of a 28-day cycle), constitute the most fertile phase.
The 1965 ACOG definition was imprecise because, by the time it implants, the embryo is called a blastocyst, [26] so it was clarified in 1972 to "Conception is the implantation of the blastocyst." [ 27 ] Some dictionaries continue to use the definition of conception as the formation of a viable zygote.
Definition [ edit ] In Islam, "predestination" is the usual English language rendering of a belief that Muslims call al-qaḍāʾ wa l-qadar ( [ælqɑˈdˤɑːʔ wælˈqɑdɑr] القضاء والقدر ).