I have Amerigroup Medicaid, when I first received my insurance card, they sent me a Medicaid card…

I have Amerigroup Medicaid, when I first received my insurance card, they sent me a Medicaid card for baby, it just says babyof***** .. does anyone know how I go about getting his Medicaid card with his name on it and when do I call or activate his Medicaid card? I am Due Sept 21st.