Definatly Moms need a break ,let Dad have him for a couple of hours , its good bonding for Dad aswell.
To add to margy's post...if you have anyone who can give you a break for a short time, take it. Sometimes even an hour by yourself can help you get the boost you need to face it again.
Its called Cholic most babies get it, starts around this age and can last for a few months, you can get 'gripe water, its kind of peperminty, but your Doctor will know what to give your child, most Pharmacies carry some also , Make sure the Baby has got all his ;wind up as that can cause some pain. Sit him on your knee and hold him forward with your hand against his chestpress gently forward this will ease the discomfort. Good luck it will pass .....