April 20th, 2017, 08:55 PM
This sounds like colic, which can be hard to live through but is common and normal and temporary. It is also something of a mystery, because there is not one identifiable cause that includes all babies who have this behavior. There are many tips on how to help a baby who has colic. What seems to work the most is changing sensory input (exposing baby to different sounds, movement, environment, etc) What I have found is you just try whatever you can and some things work some of the time, but usually nothing works all the time or for very long.
I am not sure what "gas build up" means? Lower intestinal gas is a normal result of food digestion, and the gas has to come out by passing gas. Upper GI gas is why baby might need to burp. If someone has trapped gas, either upper or lower, it may cause a pain, and eliminating the gas is what helps it feel better. For a baby, changing baby's position in various ways is probably the best way to help them pass gas. Massage may help too, but I learned the hard way to not lay my baby down to do a massage, as this made him way more miserable! Luckily babies are easy to massage while being held.
Here is a good fussy baby tip sheet: http://www.llli.org/docs/0000000000000001WAB/WAB_Tear_sheet_Toolkit/09_fussybabyideas.pdf