Ok I have had every test except for a swallow test and all have come back normal. I got this burning heavy sensation in my stomach, from being stressed I got really nauseated so I went to bed I rolled over on my back. Still had the heavy feeling in my stomach. just as I was about to dose off my body relaxed I guess and I jerked and raised up, just a little bit and felt a pop in my upper abdominal area on the left side . I felt tenderness in the area so I thought it was a pulled muscle, when I rolled over I felt acid coming up from my stomach. When I got up the next morning I could barely walk from the pain. I had pressure in my abdominal area where I felt the pop, and in my chest. The back of my mouth was red from the acid. What did I do, or what happened. My mind keeps going to a hiatal hernia, but my doctor says I don’t have one but my gut feeling says otherwise because after this on incident my reflux has been worse