But sometimes, the crying goes on longer. What Is Colic? Some babies cry a lot more than others. A baby who cries more than 3 hours a day, more than 3 days a week, for at least 3 weeks might have colic. Usually, it starts when a baby is 2—5 weeks old and ends by the time the baby is 3—4 months old. Colic happens to a lot of newborns. It's hard to see your baby cry so much, but colic isn't caused by anything a parent did or didn't do.
It allows her to call for advantage when she's hungry or uncomfortable. It shuts out sights, sounds, and erstwhile sensations too intense to suit her. And it helps her release anxiety. You may notice your baby has fussy periods, even when she's not hungry, uncomfortable, or tired. At times it may seem like nothing be able to console her.