My DS is 26 months and is still not really talking beyond daddy, mummy, yes, no, oh, and animal noises. He understands everything I say: he'll go and fetch things I ask him for, will point to animals/vehicles in books etc. he babbles away and will point at things and say something, but words don't really come out. Should I ask for a referral? He was late crawling (11 months) and walking (20 months) so I feel maybe he's just a late developer. He does play brilliantly and can do 12 piece jigsaws but just won't talk!!