netgran. I know how you feel but I tell you, my GD did something very similar. She is now 6 years old and because it stopped I no longer remember when that actually happened. It would have been ages ago and obviously it was just a silly something at the time. Please try not to worry too much it is perhaps too early to associate the little mite with having a stammer but I am sure you will keep a loving eye on the matter.
Hope all goes well, by the way she is very smart, perhaps it is a trait for a good thinker!.