How to understand is baby is hungry and is any pain in baby
Signs Your Baby is Hungry
Fists moving to mouth.
Head turning to look for the breast.
Becoming more alert and active.
Sucking on hands or lip smacking.
Opening and closing mouth
Watch for these signs of pain
Changes in usual behaviour. ...
Crying that can't be comforted.
Crying, grunting, or breath-holding.
Facial expressions, such as a furrowed brow, a wrinkled forehead, closed eyes, or an angry appearance.
Sleep changes, such as waking often or sleeping more or less than usual.