My DS is normally very chatty and constantly babbling but recently he has started stammering more and more and stumbling over his words e.g. I will say 'can you tell Daddy what you did at the park today?' and he will say 'I-I-I-I-I-I-I-I-I-I-I-I-I-I-....I-I-I...wen' on carousel!' or if he's looking for something he will say 'wh-wh-wh-wh-wh-wh-wh-wh-wh-etc... wh-where my truck go?'
Is this developmentally normal, just a phase they go through as their sentences get more complex or is it worth talking to his doctor about (we're in the US so all via pediatrician, no HVs or GPs)?
I don't want to make a fuss and make him self-conscious about it but it is paining me to listen to him when I know he can speak fluently when he wants to and has a wide vocabulary. It is frustrating me listening to him get frustrated! If it is cause for concern I would like to nip it in the bud and get him help too.
Anyone else with a normally fluent-speaking DS suddenly stammering and repeating himself? Did it resolve itself or was it the start of a problem?