Kimberley Walsh rushed her son to hospital after he suffered a dislocated elbow falling off a chair. The Girls Aloud star has revealed her two-year-old boy Nate took a nasty tumble during the half-term holiday and she rushed him to the accident and emergency department because he was in so much pain, however the nurse who checked him over said he was “fine” and sent them home. In a post on Instagram, she explained: “Not exactly how I hoped half term would go. My little climbing monkey fell off the chair and landed funny on his arm. “I knew something wasn’t right so we went to A and E to get hi…