Mm hmm-a distinct human organism, but not a baby. Big, big difference.
No, it's not. Zygotic human. Embryonic human. Fetal human. Prenatal human. Newborn human. Infant human. Adolescent human. Adult human. "There's a draft in here" human.
Just different stages of development. And equivocating on whatever you define "baby" as, has nothing to do with the matter.