Morning sickness starts very early in pregnancy, often before the baby's hormone levels become significant in comparison with her mother's, so initially there shouldn't be a connection.

晨吐在怀孕初期就开始了，这时候宝宝的激素水平和母亲的激素水平还不能相提并论，所以这之间并没有什么联系。

youdao

Morning sickness starts very early in pregnancy, often before the baby's hormone levels become significant in comparison with her mother's, so initially there shouldn't be a connection.

晨吐在怀孕初期就开始了，这时候宝宝的激素水平和母亲的激素水平还不能相提并论，所以这之间并没有什么联系。

youdao