About 5 Weeks Ago, I Drank Wine And Was Under

About 5 weeks ago, I drank wine and was under high stress due to a few varying factors. I'm not typically a drinker of alcohol and notice a burning / indigestion sensation. As the week progressed, this progressed to the point I went to the ER for symptoms of upper back pain, chest tightness, belching up acid... My heart was checked and results came back normal. I saw my family physician who stated that my symptoms were a result of anxiety (muscle tension), and GERD. I was given Pepcid tablets which have helped slightly. I have noticed a new symptom: when I touch or press my ribs just under my breast (on both right and left sides - mostly right), I notice tenderness and pain. One spot is more tender in that area that others. Is this potentially a sign of having a hiatal hernia (which may be pressing on my diaphragm) or could this just be due to muscle tension from stress? I had similar symptoms a few years ago when under stress that seemed to disappear once the stressor vanished. Thanks.