K.N.
Sounds like colic. My son had a bit of this, and gas drops seemed to help a TINY bit. Then our dr. gave him prescription drops (completely safe for their systems), and that seemed to help even more. Sometimes their little systems just have to mature, so it will get better over time!
Also, scrunching up my son's legs seemed to help a little. I'd lay him on his back on the bed or my lap, scrunch his legs up, and move them in big circles.