My ds is 3.6 yrs old. We're living abroad so before leaving UK last May I took him for a check and he was 91cm tall, on the 25th centile. We're both on the short side and he has always been smallish. But took him to a local doctor the other day for a pre-school health check and he had only grown 2cm since last May. The doctor was also concerned that he was too small for his age (however people are generally taller here, plus we come from short families, so we are not TOO worried about what she is saying). He has a great appetite and would quite happily eat all day if given half the chance. He is active and healthy and happy. Should I be worried? Should I take him back to that doctor and let them do tests on him? Can I expect a growth spurt this year maybe?