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怀孕正常一共多少天
更新时间: 2020-11-05 00:00:00  

怀孕整个孕期是280天即40周,生产提前或推迟1周以内属于正常现象。孕期的开始是从末次月经的第一天开始计算的,即最后一次月经的第一天开始计算的。若28周之内出现流产症状,称为先兆流产,12周之前称为早期先兆流产;12-28周属于晚期流产。

关键词: 怀孕 正常 一共 多少

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