Frustrating GI Symptoms-What could it be? What to do next?

I’m typing out of straight up frustration. I’ve had upper GI issues since coming off almost a year’s worth of antibiotics May 2025. I’ve tried probiotics, diet changes, PPI’s, Sucralfate… nothing seems to work. My GI does not believe the antibiotics caused these problems.

My endoscopy came up with a 1cm hernia and non-dysplasia short segment Barrett’s esophagus. My ultrasound was perfect minus my spleen being just very slightly considered “large” (doc thinks it’s my normal size). I’m also negative for “dysplasia”.

So what could possibly be causing me to have burning pain in the middle of my upper abdomen , loud stomach noises, constant burping? Is it my 1cm hernia or could it truly be something else?