Young moms: How did you afford baby?

Not super CC, but I wasn't sure where to post.... As we prepare for our first baby, we keep commenting how expensive everything is. We're both 32, do well in our careers and can more than afford what we need for this child, but the stuff is freaking expensive regardless. We keep saying "how the heck do 16/17 year old kids afford a baby!?" I figure I would just ask, those that had a baby in your teens, how did you fund all the things you needed? I know I had hardly any money as a kid working part time after school, so I'm just curious I guess.