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怀孕后多少天是产期
更新时间: 2020-11-04 00:00:00  

孕周从末次月经第一天开始计算,通常比排卵或受孕时间提前2周,比着床提前3天,一般妊娠的时间是40周280天,一般以4周28天为一个月,所以共计是10个月40周280天。

关键词: 怀孕 多少 产期

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