Sounds like colic. Both my kids had it. I breastfed my daughter till 2 so you don't need to stop unless your milk is not strong enough and then you can also just subsitute with a bottle and still give a breast feed. We used to found that after the breastfeed we would hold her so that she would lay with her whole body on our arm especially her sore tum and then gently sway with her, she would drop off to sleep and then we would put her in her wedge on her side. I also put gripe water on my nipples before feeding, I took my time with feedings, winding every so often so it was not one solid feed. This all helped with my daughter, my son however was so bad medicine was required after each feed. It was special medicine we got from the pediatrician, then someone told us that his neck or back could be adjusted by a chiropractor as well and that sometimes helps. You will need to see what works for you and if you still battle go see a pediatrician and perhaps they could refer you or help you out. Just be strong, if things get too much rather put your baby down and go sit in a different room for a few minutes, sometimes its the best thing to do. You calm yourself and then you can look after her/him better and with a clear head. All the best for you, colic is not an easy thing to cope with