女性排卵期如何算?精准排卵期算法!

知道排卵期怎么算的吗?
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首先要明白几个关键的概念:末次月经、经期、月经周期、卵泡期、黄体期。

末次月经:上次来月经开始出血的第一天。是月经来的那一天,而不是月经结束的那一天。临床大夫不会关心你月经几月几号干净的,只会关心你月经是几月几号来的。

月经期:指来月经出血的那几天。就是从月经来第一天,到月经干净的那一天这段时间。大多数人月经一般是3~7天干净。

月经周期:两次月经第一天之间的时间。是起点到起点的时间,不是终点到起点的时间。

卵泡期:从来月经第一天开始,卵巢进入一个新的周期,大批卵泡开始同时发育,一直到排卵期,发育最大的那个优势卵泡破裂之前这段时间,是卵泡期。也就是说,月经期也包含着卵泡期内。月经周期有长有段,就是因为每个人的卵巢从卵泡开始成批激活,发育,到卵泡成熟排卵所需要的时间不一样,卵泡期有长有短。

黄体期:排卵过后,卵泡塌陷形成黄体,从排卵后开始算,到下次来月经第一天之间这段时间,是黄体期。黄体期是排卵日推算的理论基础,因为黄体寿命基本比较固定,14天寿命。也就是说,黄体期一般都是14天。

那么排卵期日,就是下一次来月经第一天向前推14天。

黄体期是不需要计算的,一般都是14天。

而卵泡期,每个人都不一样了,卵泡期有长有短,这就需要我们通过记录的月经来计算了。

推算排卵日,就相当于推算卵泡期的长短。推算你的卵泡要发育多少天才能排卵。

排卵日,就等于你末次月经时间,加卵泡期的时间。Beauty and the Beast 2017 live streaming movie

知道了月经周期,卵泡期就好算了。卵泡期=月经周期-14天
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下面来实战一下!

例一:比如每个月月经都是3号来,那么你的月经周期就是比较稳定的30天的周期。你的卵泡期就是16天。上次月经是3号来的,那么这次排卵的日期就是3+16=19号。

排卵前后24小时同房受孕的几率是最高的,你就可以选在18、19、20号这三天同房。

例二:如果每次月经都提前4天,比如上个月3号来,这个月29号来

最佳同房日期就是14、15、16号这几天。

例三:月经不太规律的人,排卵期就不那么精确了,范围会大得多。比如有时候提前3天,有时候推迟3天这种。

例如,假设末次月经是3号,下次月经如果按提前3天算,会在30号来,如果按推迟3天算会在下月6号来。这种情况,月经周期就在27~33天不等。排卵期就是13~19天不等。如果末次月经是3号,那么排卵日可能会在16~22号。

这种情况下,如果安排同房,能再在15~23号这段时间,隔日同房一次才能勉强保证不错过排卵期。

本文取自:
头条号 / 郭大夫科普时间

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