Teething for many babies teething is tough as new teeth push up and start to emerge little gums become swollen and tender your once calm placid baby may disappear temporarily sometimes you can see or feel the swelling of a new tooth bud other teething signs to look for include loss of appetite eating and breastfeeding stimulates blood flow to your babys mouth which can make sore gums even more sensitive so your baby might not want to eat as much as usual anything touchi