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怀孕多少周会出现恶心呕吐
更新时间: 2020-11-04 00:00:00  

早孕反应因人而异,大部分的孕妇在怀孕40天左右会出现恶心、想吐的情况,属于正常现象。

妊娠是指胚胎或胎儿在哺乳类雌性体内孕育成长的过程。人类妊娠全过程共分为3个时期:妊娠12周末以前称早期妊娠;第13—27周末称中期妊娠;第28周及其后称晚期妊娠。

关键词: 怀孕 多少 出现 恶心 呕吐

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