I've always worried that his finger sucking would effect his speech. I mentioned it at his 2 year check and was basically laughed at so don't really want to ask the HV for advice. Most of his speech doesn't make much sense to other people but i know what he is trying to say most of the time. He seems to have a problem with f's and s's. For example frog is rog, spiderman is biderman, fireman sam is ireman bam, biscuit is bit-tit (although when he first shouted this in the middle of tesco we thought he was saying something else) We read A LOT to him, it's the only activity he will actually sit and concentrate on. We always encourage him to say whats in the pictures and he's constantly telling us what things are when we go out. When i ask him to say f f f f he says w w w w. Is this normal speech for this age or has his finger sucking caused problems?