Hi all so my 16 month old isn't walking or talking yet. He has said one word so far and it's the only one he uses. He doesn't try to say anything else, he has cruised along the sofa but doesn't do it for long and only does it if I place him there other wise he won't do it. He's a big baby and alert, very happy and content and responds well when spoken to and to his name. Should I be worried? Should o take him to the doctors for a check up or is there anything I can do from home to help him walk and talk? Thank-you in Advance 