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?

There was a baby book included in the baby bag provided by the hospital where I gave birth. Our pediatrician uses it for baby's monthly checkup. Aside from the monthly notes for the baby, there's sort of a vaccination calendar at the back which they mark every time a vaccine was given.