So lets go over how pregnancy is supposed to work.
Girl Becomes Pregnant -> Birth Split ( baby is tubed (cost), baby is auto sold (cheaper)) -> baby is removed from tube grown split (boys are auto sold, girls are sold if auto is on or pushed to the pens.)
I want to do that your children can become assistants but it is a lot of extra work to make new assistants. Lots of internal issues. I may still do it later on.