pregnant! but bloody type is negative 😫

Des • Rainbow baby Anastasia is here ❤️ and baby #2 Adrian💜
Can anyone who has a negative blood type explain to me what steps are involved to make sure everything goes smoothly? I have no idea what my boyfriends blood type is so it could be anything. We're in the process of figuring it out. I am almost 7 weeks in and would like some reassurance!