Bowl issues and excessive burping for 7 weeks, really worried

Hi! I'm a 30 year old male. Basically I noticed 7 weeks ago i could not stop burping one morning (literally every 10 minutes when its at its worst). The burping has not got any better and its really starting to worry me especially since they've started to come with some acid reflux and from searching i have read excessive burping according to Dr. Google may be a sign of stomach cancer. It is worse after eating but starts the moment I get out of bed in the morning and just continues throughout the day. In addition ive been having bloating, trapped gas and occasional left abdominal pain and my poop is inconsistent, sometimes normal, other times soft and flat like a ribbon, and i often have the feeling i need to go even though ive just been. Have done both FOB and FIT tests and both have come back normal. Does anyone have any idea what this could be? Got a telephone appointment in 10 days with my GP again... but yeah any advice would be greatly appreciated. Thanks Dan

im going through same thing amd waiting yo see gi dr. im worried also. my father had stomach cancer.
i dont know what or who to talk to.