Worried about baby holding?

Heather • 24, lover of animals. Happily taken and expecting dec 2015.
Is anyone else super paranoid or already over protective for when the little one comes and people holding them and stuff? My bf's SIL just had her baby and mainly his family was being aggressive and such over holding her. Like I noticed they were constantly kissing her, etc. I understand the excitement and all, but it does scare me for when my little one is here. I don't want her getting sick or have to even be slightly rude to anyone over who gets to hold her next. I feel like everyone is gonna be kinda selfish and I don't want any arguments, ya know? Has anyone else dealt with this and if so, how did you handle the situation. I'm literally terrified now more than ever.