My baby is 5 days old and all of a sudden he started crying when we put him down to sleep. He was fine in the hospital (stayed a few days in NICU) and when we got home tonight he ate good his first feeding and then his second he started falling asleep and could only get through half of his bottle. Every time we would put him down he’d start screaming . His diaper doesn’t need changing and we don’t know what’s wrong . Help!