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一般说来,排卵期是在下次月经来潮前十四天左右。这是因为排卵后在卵巢里形成黄体,黄体可以同时分泌雌激素和孕激素,使子宫内膜增厚,并使子宫内膜的腺体变得宽阔而弯曲,分泌多种为迎接受精卵而准备的丰盛养料。假若卵子排出后未能受精,在排卵后大约十二天左右,黄体由盛而衰,逐渐退化而凋萎,再过两天,子宫内膜的表层(医学上称为功能层)也开始发生同步的退化,因为失去了雌激素和孕激素
In general, ovulation period is about 14 days before the next menstrual cramps. This is because after ovulation in the ovary to form corpus luteum, the corpus luteum can simultaneously secrete estrogen and progesterone, so that the endometrial thickening, and the endometrial glands become broad and curved, the secretion of a variety of eggs to greet the Prepared rich nutrients. If the ovum fails to fertilize after ovulation, about 12 days after ovulation, the corpus luteum will gradually degenerate and wilting, and the corpus luteum will gradually degenerate and wilting. In another two days, the surface of the endometrium (medically known as the functional layer) begins to take place Synchronous degeneration, because of the loss of estrogen and progestin