I got the same problem other way around, playing a female character, I married Fiarad (a minor Battanian Noble).
At first I thougt it works like with my male character before, I can do whatever I want, my heroine will get magically pregnant at some point.
Nope.
Now I took Fiarad to my party, still nothing happened.
Now some friends of mine told me, that I should just wait at a town for a while until my heroine gets pregnant.
I hope that helps, since she's 33 now, time is running short...
Or is there a known bug like that female player characters can't get pregnant or **** like that?