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孕6周加1天是多少天
更新时间: 2020-11-04 00:00:00  

怀孕6周一般是指孕42天。1周就是指正常的7天。孕周的计算从末次月经的第一天开始计算,而不是从同房日期开始计算。月经周期规律的女性,一般用末次月经来计算孕周是相对准确的。如果月经周期不规律的女性,除了末次月经时间和平时的月经周期波动情况,还需要借助彩超的结果来综合判断孕周。依据孕7-8周的彩超中胎芽大小,判断孕周相对更准确。

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