>awakened him when she was a child
I've finished the game a while ago, bud I don't remember exactly how it was that she awakened him.
However, another girl opened his core previous to Lora. At first I thought the girl was her, but later (I'll spoiler it in case you haven't seen it)Jin finds a diary of his past self from when the little girl awakened him by accident, it's when he learns how to become a flesh eater
Anyways, I don't think blades can get pregnant. Considering no one knew how blades reproduced, I think it's something they would have brought up if blades could mother human children but not baby blades.
>Corrine says that it wasn't uncommon for drivers to marry their blades in the past
any anon would marry his waifu if she was real, even if they couldn't have babies. It's not like bodypillows can either