Hi everyone, my son is almost 15 months but doesn't say any words. He will sort of yell and make sounds and sometimes even makes tut tut sounds but no actual words. Should I be concerned? He doesn't really like playing with people even though we live in a full house (5 adults, 2 kids) but will watch tv and play by himself happily. He doesn't respond when his name is called but I don't think it's his hearing as when he hears the tv going he will run to the living room. Should I get him checked out?
TIA