Back And Chest Pain, Digestive Enzymes Worsened Pain. What Is It?

Hello Doctor. For a couple of months now i have been having acid problems, heartburn etc, i notice that since it started i get dry lips alot aswell, even though summer has just passed, this would get alot worse the day after i drank alcohol. Since this all started i have also developed muscle fatigue , which does not prevent me from going about daily life in any way it is just what i would call a hinderance . Along with the muscle fatigue i get pain in the upper left part of my abdomen (stomach), had a stool test for h.pylori that came back negative also had bloods done that came back ok. My Doctor gave me omeprazole which i took but nothing really happened, took myself off that and on to a low/no carb diet accompanied with: peppermint oil (tablet form) mastic gum and a probiotic and things have improved slightly but i still have esophagal pain but rarely get heartburn now, i get back pain and chest pain , i started taking digestive enzymes recently and that has made the pain worse so i am stopping taking them. I am going back to my Doctor this week to talk with him on how to move forward, based on this can you give me any advice on what it might be?