Ds1 is 12 in december and is only 122cms tall. Great Ormond street mentioned his height recently but I thought he was ok, I am only 5ft tall myself so just assumed he is like me. But when I checked his height on a chart he has fallen completely off the bottom scale. He was always on the lower percentiles when younger, not sure when he dropped off but he hasn't grown much in the last few years. SHould I be worried?