Colic (uncontrollable crying in a baby with no obvious cause), is a common problem affecting around 1 in 5 babies and usually starts a few weeks after birth. Looking after a colicky baby can be frustrating and distressing for infant and parent alike. Symptoms include unexplained crying episodes lasting from a few minutes to a few hours, often at the same time each day; intense high-pitched inconsolable crying, sometimes with a flushed complexion; and postural changes such as curled up legs, clenched fists and tense abdominal muscles. Babies may also pass wind or a bowel movement towards the end of the crying episode. Unfortunately, there's no sure-fire treatment that works for all babies with colic.
Luckily, however, colic is not thought to be harmful to your baby and will generally improve by age 3 - 6 months. In the meantime there are a number of natural techniques that may help:
Natural remedies for colic

1) Burping position
Holding your baby as upright as possible during feedings and pausing regularly to burp them may help reduce wind. For burping, lay the baby a little higher that you normally would, so that your chest is gently pushing against their stomach. Lean slightly forward so that the head is leaning back just a little, making it easier to unleash the burp. You want to tap on the lower back at first, then slowly move to the upper back. Keep patting until at least 3 burps have been released (there’s often more trapped air in there than you think!) In severe cases of colic, you may have to lift baby's arms a few times and repeat.