In-law frustration or am I just hormonal?

So if i come across moody or hormonal im 15 weeks pregnant with number 1.. Haha.. So anytime my inlaws refer to my baby boy they say "our baby" or "our boy"... Likee... Somewhat posesive sounding... And i know they are excited as this is their first grandson/ nephew but it irks me... I feel like im just the incubator and once little man is here its just going to be him that they want... Idk... Again in probably just hormonal but i would prefer that they call him "the baby" or by his name (Hugo)... Am i being silly or is it normal for inlaws to call baby theirs? Here's an example...