37 yo- pain upper right ab almost crampy that comes &goes and worse when bending over &moving sometimes. few months on and off .. could this be some type of cancer. have history of gastritis and gerd and hiatal hernia on egd? c section 2017. scared?

In that area of the abdomen you have abdominal musculature, liver,gall bladder and some underlying intestines. The right lower rib cage borders it. Since there is some relationship with abdominal motions, a musculoskeletal cause is most likely especially if you have no digestive symptoms. Start with an examination by your MD. Appropriate testing can then be done if needed.