Is it wrong of me?

To not want to share any information about my pregnancy or my son with the father's family or friends. We have been broken up since before I found out and he is barely around. I keep my pregnancy pretty low key and only inform my family members who call or contact me or see me daily. And who have been there since day one. So is it wrong that I want to keep any and all information from the "father's" side?
Updated information: I've met these members only ONCE. And the one time I met them, the aunt introduced me to the rest of the family as his "friend" which we had at that point been together for 1 and a half years. They have nothing nice to say about me ever and I've gotten disrespected by his mother more than a handful of times to my face and she has called the baby "a thing" to my face as well and not once was I congratulated by any of them or have they ever come to me asking me anything. Seeing that I am 8 months pregnant and they have known for almost 5 months "because he kept it from his family from the moment we found out" and still nothing. I don't think they deserve any information and I don't think I should share.