Dear friend, welcome to HCM.
yes, with these extensive testing, cancer is ruled out macroscopically.
you have gastritis
, not much helped by current meds. have you changed eating practices and checked if it works?
your current medication is a good one for acid suppression. may add a gastrokinetic. if not helping, should consult a gastorenterologist for rare dyspeptic syndromes.
Take care and pl. keep me posted on your progress.