I don't feel like I'm wrong for telling my baby father I don't trust any of his sisters like so far…

I don't feel like I'm wrong for telling my baby father I don't trust any of his sisters like so far I've gotten into arguments with 3 of them where they have questioned my motherhood, questioned if my son is my baby fathers child called me out my name etc.. & they're all cool with his ex gf who hates me & made a fake page & told me she would beat me up while I'm still pregnant to kill my son I feel like if they can talk to her & hang around someone who wished death upon my unborn child I can not be fake & phony & pretend like I like them, they don't even write me or ask my baby father how my child is doing so I don't feel like I should rush to take my son to meet them after he's born & I don't want them to have pictures of my son after he is born until I get him blessed because I don't trust his ex gf she is evil & I believe she will try to do voodoo on my child