My baby had her 18 month well check today and my pedi said she looks great and is right on track but that her head is on the bigger side (which I never thought it was) and to bring her back in 2 months to check the size again. He said depending on the size then she may need an MRI to rule out hydrocephalus and stuff like that. Has this happened to anyone else? Up until now he has never mentioned her head being big. In my opinion it’s not at all! It’s 19 cm in circumference and the average for a toddler is 16-18.