Struggling to nurse or use a bottle
Milk leaking from mouth while eating
Clicking noises while eating
Exhibiting slow or poor weight gain
Showing signs of reflux
Colic-like symptoms
Excess gas or fussiness after eating
Painful nursing
Incomplete breast emptying
Mastitis or clogged ducts
Low milk supply
Cracked or sore nipples
Frustration or disappointment with nursing