J.B.
Breathe mamma breathe.....I have three girls ages 6 4 and 5months. My oldest daughters both went through this around ages 2-4 years old. I was also concerned like you and the pedi told me this is perfectly normal. The reason is that their brain is thinking faster than they can get their story out causing them to stutter. My doctor recommeneded that I just remain my kids to slow down and tell me. This takes time but it is just a phase and they will grow out of it. It is all normal at this age. My pedi told me if they were to continue after a certain age can't remember want to say 5 or 6 then we would do test but all gone.....now I have to go through it again with my NB in a couple of years.