IIRC just short of seven years.
Exactly.
It's the combination of being with someone who you've only spent a couple weeks with plus being pregnant that is stressful. When you know and love the person it's not stressful.
But we don't don't marry for love. We marry for compatibility and then the love develops naturally.
Personally I think it's a nice thing to wait for it to develop before having kids but many Rabbis would consider that sacrilege. Then again that's what causes stories like the OP.