Do you have a sort of log book for your baby to record her immunisation/ milestones etc - a "baby book” as what they call? When did you get one?

I have recorded it in my baby's health booklet which was given by the hospital when he was newly borned. In Singapore, every babies will have their health booklet when they discharge from hospital. We will record their birth details, immunisation record and also A checklist on their development.