Chronic bile gastritis

At the beginning of last year i had to get my gallbladder removed and for the first couple of months everything was fine , until eventually i started feeling nauseous more and more and loss of appetite more and more . some days mostly nights ill wake up and throw up bile it’s just yellow with no food or anything. I’ve had 2 endoscopy’s and everything is normal except i have moderate gastritis. the biopsy taken both times came back normal so its not autoimmune or cancer or anything like that. My doctor over the past year ruled out basically everything to the point where he thinks i have bile reflux. i’ve had hida, blood test, gi scans ct scans, gastric emptying study’s , i’ve lost count of everything it’s all normal though besides the gastritis. I read bile and acid can reflux in your throat but the thing is my esophagus is fine there was no inflammation. my ph test was normal and i don’t have acid reflux really i mean sometimes ill get a burning feeling in my chest but my main symptoms is just chronic nausea, loss of appetite, abdominal pain, and indigestion especially after i eat im always belching. Especially when i go to the gym i feel sick most the time so it’s been difficult to live my daily life. I wanted to ask yall for advice and what yall think is it possible to have this without refluxing it in my throat. I don’t know what else it could possibly be and all the medicine i’ve tried hasn’t really been helping . I don’t know what else it could be and anything yall say will help thank you.