Is your baby not smiling yet, and every passing week making you wonder whether something is wrong? Baby Not Smiling Yet offers calm, practical guidance for understanding early facial expression without turning a broad developmental range into a deadline. This book explains when social smiles commonly emerge, why some babies communicate first through gaze, movement, vocalising, or quiet observation, and how temperament, prematurity, sleep, feeding, and opportunity for face-to-face interaction can shape what parents see. You will learn how to observe patterns across ordinary routines, distinguish an absent smile from a baby who is simply tired or overwhelmed, and prepare a useful conversation with a health visitor or paediatrician. It also addresses corrected age after premature birth, cultural and neurodevelopmental differences, and the emotional strain of comparison, without blame or forced positivity. Clear checklists, gentle interaction ideas, and red-flag guidance help you decide what to notice, what to record, and when to ask for advice. Whether your baby is weeks or months old, this compassionate guide supports informed attention and a steadier next step. Part of The Smile and Happiness Library.