i need options about delivery and who should be there

i’m only 19 years old / 34 weeks pregnant and my boyfriend just turned 20 not long ago. we have been together 4 years but we are young & i know it wasnt really planned. anyway, i’m very close with my family along with his. obviously i don’t want his mom in there when i’m giving birth which they don’t care but i want my mom and sister in there because they’re like my best friends (my sister is 23) and i would feel more comfortable and possibly less scared because this is scary for me. well my boyfriend just wants it to be us and is saying stuff like “if they tale away the moment i’m not going to be nice” and he just doesn’t want them taking away from him and his moment which i get too. what do you guys think honestly!