My Sim got magically pregnant

I wasn't really sure where to place this thread, so I hope here is ok.

So here's what happened:

I married Morgyn Ember. From what I read, although he is a male, he isn't able to get anyone pregnant, neither does the option to try for baby show up on the menu. Yet here is my sim, 24h away from her second trimester, and happy cause she conceived after trying for one.

It's not a bad issue, although I didn't want to be pregnant now, so it is a bit annoying. 

Is this a miracle pregnancy though? She didn't woohoo with anyone else.