My daughter is 4 months old as of today. We had her four month check up this afternoon and her pediatrician seemed very surprised that she is not squealing and making high pitched yells or noises yet. She said that if she doesn't soon that we might need to think about speech therapy! I think it sounds a bit ridiculous to put a four month old in speech therapy and am trying to just reassure myself that every child develops differently, but I guess her little 'worry' now has me a bit worried too. Should I be concerned about my daughters lack of squealing or is this something that normally isn't ALWAYS happening by 4 months?