It may seem like you were just at the pediatrician, but your childs sixteenth week means its time to head back there! As usual, your doctor will begin your babys examination by weighing and measuring your baby. And, as at every routine visit before and after this one, head circumference will be measured to ensure the brain is growing nicely. After doing a physical exam and asking about development and any problems since the last visit, your doctor will give your baby his second round of vaccinations. Your infant will probably receive the second series of polio, pneumococcal, Hib, rotavirus, and DTaP vaccines. Your babys doctor will want to know more about your little ones sleeping patterns, which probably havent changed much since your last visit. Still, its time to ease into a bedtime routine that will help BOTH of you get more sleep, and your doctor will offer tips on the process. As usual, the doctor will also ask about your babys eating and bowel habits, all of which should have remained fairly consistent. Since some parents are ready to change their infants diets at this point, this may be a good time to broach the topic of starting solid food. In terms of physical development, your pediatrician will question whether your baby has done that first mini-pushup, an important stepping stone. In addition, your doctor will ask if your baby is rolling over on his or her side, or sitting up with support. Your baby may be reaching for things or clapping, and should certainly be bouncing and kicking those little legs. Your doctor will keep tabs on all of these movements, as they symbolize healthy development patterns. To measure your babys mental development, your babys pediatrician will also ask you about the noises your little one makes. At this point, most infants can gurgle, coo, squeal, and even laugh, which shows they are on target in terms of language development. As always, youll want to conclude by mentioning any concerns you have or changes youve noticed since the last checkup. Then, say bye-bye and enjoy another two month break from the doctors office!