Rho(D) Immune Globulin Injection??

🍼❤💍Cambria • 💗Presley Jade`s Mommy💗
Just went to my regular appointment and I got the whooping cough vaccine.... And they also just told me about this vaccination called the Rho(D) that is for mother's whose blood type is RH Negative.... I've never had a vaccine in my life until a minute ago and I'm not sure I want to get that one..... Nobody I've talked to has ever heard of it.... I've looked up on it a bit... And I can't decide. Is anyone else RH Negative and been told to get this??? What are your thoughts??