We have DS 9, DD 4 and DD 21 months. I keep thinking about having another baby but we don't want to try for another year or two as we have so much going on with a new house and work.. Is it selfish of me when my son will be 11 or 12 and starting secondary school to have a new baby? He already gets frustrated with the sisters he has! Or am I over thinking this? Does anyone else have 10+ years between children??