My 3 month old son keeps a lot of saliva in his mouth which later run to the head anytime I place him on the bed. Sometimes he finds it hard to swallo
It depends on how much saliva the baby is bringing out. If you are changing bibs 4 -5 times in an hour, then you need to see a paediatrician. But if not that frequent, it could still be a normal development. If you are not sure and worried, please see a paediatrician.