My bf doesnt understand I want no visitors after baby is born

My bf and I have been together for 3 years now going on 4 & I am currently pregnant with my Second child (This is his first) my son is 6 years old. He doesn’t understand that I don’t want visitors around the baby until shes at least a month old. I told him his parents and mine are an exception & that I want no visitors until shes at least a month old. I understand its his first baby and he’s excited and wants to show her off I just can not risk her getting sick. His family is constantly sick with either a cold or covid! Last year someone in his family gave us covid they are very very reckless when it comes down to this. Its been 3 occasions where everyone or mostly everyone tested positive or is sick with a cold. I do not go out or do anything and when I do I am wearing my mask, And I always seem to get sick when I’m around his family! Im currently pregnant and sick because his nephew had bronchitis & a cold. He is mad at me because I choose to not want anyone around our child. I feel like I have a reasonable reasoning behind it. Does it seem like I’m not giving him a choice ? Is that bad ?