sudden crying of baby , rocking or carrying giving no relief , continuous cry , not feeding , nothing helps quiten the baby then most common reason is colic

Signs of colic in baby - cranky irritable and crying. Cries usually everyday at the same time. Crying without no reason (no soiled diapers or hunger). Baby pulls up his legs crunches his hands into fists. Bowel activity increases he may pass gas or spit up. Baby won't settle to sleep, no matter what you do.

try colicaid

Signs are easy - constant crying usual during same time of day.

The baby would cry continuously