My daughter's pediatrician gave my daughter the same set of shots at 2 months and 4 months. One of the vaccine was called Pediarix, which contain Hep B, dTap, and IPV. The doctor never gave us any vaccine record booklet to keep track but when I looked up the schedule online, you are not suppose to get Hep B at 4 months. We are going back next week for her 6 months shot and I remember she said it will be the same set of shots again. Did your baby get Hep B shot at 4 months?