You’ve fed your baby, changed his diaper, made sure he isn’t sick, checked to see if he’s comfortably dressed, and still there’s no relief from the hours of crying. It could be colic, especially if your little one is less than four months old and is inexplicably irritable, fussy or cries for three hours or more in a row each day, at least three days a week for at least a week, and there are no signs of failure to thrive. For many parents, colic is absolute nightmare. And while some say you just have to get through it until it passes, others swear by certain remedies.