Guys, I have read on Steam forum that the solution is to make a wife governowr in some town, to have a beer in inventory and to wait in that place. After loooong time waiting for the things to happen I did exactly that. Worked almost instantly
. I wonder if it is always a solution. Many times my other wife in other playthrough got pregnant while wondering with her hrough the map I think but I never payed attantion. Now this trickl seems to work. Check if it will work for all of you too. And I mean version 1.4.0. with mods but no mod is fertility related.