I would never do unnatural pregnancy and birth anyway. If you can't have a kid without scientists and doctors that is nature's way of telling you not to be having kids.
I told this to my fiancee when we were making babies… she didn’t take it very well 😀
She was all about cycles and temperatures etc.
I was anout the oldskool methods. Just keep the uterus drenched in cum and see what happens.
Third one just turned 17 so it was long ago and far away.