This is a hard one! Little babies with little tummies can get gas and general stomach distress that makes them irritable, uncomfortable and inconsolable. It’s hard on them and equally (more?) hard on parents.
    Sometimes, the problem has to do with an immature digestive system, but sometimes it is an aggravation caused by intolerance to something in the baby’s diet or mother’s diet (if nursing). Changing formulas or experimenting with your own dietary changes may make a difference. Ask you doctor for guidance, at least in order to rule out this possible cause of fussiness. Sometimes extra burping or giving smaller feeds will help reduce gas and bloating, so you can try that as well.
    Some babies are fussy because of allergies to the fabrics they are wearing or lying on. You could experiment with this as well to see if any change makes any difference. A consultation with a naturopath can be helpful because sometimes they can offer safe treatments that reduce gastric upset. They may also have potions to calm the upset child (and you!). Homeopathy, for example, offers many solutions for colicky babies.
    Try to reduce noise and chaos around the baby, if only to reduce the stress on his system. Sometimes, specialty relaxation music can be purchased to help the baby’s body entrain to a healthful, relaxed rhythm. “Chakra Suite” by Steven Halpern is one such piece of music that works with humans and pets as well!
    However, if there is no effect of such environmental changes, then you have a baby who is crying and won’t be soothed. Some parents find that their babies will remain calmer when carried in a back pack. The advantage of a back pack over arms, is that the baby is out of your way and you can carry on with cooking, cleaning and other tasks. You might even be able to go shopping with the baby settled comfortably on your back. Baby back packs are usually used for slightly larger babies who can hold their heads up by themselves, but some parents have been able to successfully and safely modify a back carrier to snuggle around the baby’s head and support the baby upright even for the very little ones like yours. Front packs can also be used, of course, but it is much harder to accomplish anything when the baby is sitting right on your chest.
    Many people cannot use a back pack or don’t want to, however. It may still be possible to comfort your baby by old-fashioned “swaddling.” There are books that describe how to swaddle a baby and the safety and warmth of swaddling can be soothing to a baby with stomach pain. Alternatively, placing a warm “hot water bottle” on the baby’s tummy while the baby is in his or her crib, can be calming as well (be sure the hot water bottle isn’t actually hot!).
    Some babies will calm down when they experience a blast of fresh air. Can you take the infant out in the stroller after lunch? Sometimes the car seat can have the same effect, or even the stroller will work.
    It takes much experimentation to see what will work best for your baby. By the time you figure it out, the baby will probably have matured out of this crying phase! Meanwhile, you must try your best, if only to calm YOUR nerves! It is so hard to deal with a distressed infant. Parents can feel helpless, overwhelmed and even desperate in the face of constant crying. Know that you are in the good company of millions of parents who have had to see their children through this behavior. All of these children stopped crying eventually and yours will to. Your calm attitude will help both you and your child.