Are you a “mom” when you’re pregnant or not one until you actually have the baby

Weird question but I’ve used the phrase “this mama is hungry” or “this mama needs a nap” and my husband keeps correcting me and saying I’m only “dog mama” since we have a puppy. This has nothing to do with Mother’s Day either but I think we should still be acknowledged as mothers while we’re pregnant. Pregnant mothers change a lot of things to keep their babies safe and go through a lot of changes physically and I just think we deserve a little more credit. If I’m totally wrong on this subject then I will appreciate the education and wait to call myself a mom until my baby is here.