Suggest Treatment For Acid Reflux,diarrhea And Anxiety

i have recently been diagnosed with acid reflux. The symptoms I had prior to this were nausea, no apetite for food, dry mouth, regurgitation, and a dry heaving and gagging urge. I went to the doctor and am now taking medicine. However, just recently, I have been having more stomach problems. My stomach feels really tight, as well as my chest and back. It hurts to stand up for long periods of time, feeling like my whole body is tense and tight. I have also had diarrhea for about two weeks. Are these symptoms related to acid reflux or are they different? Also, I have anxiety and my parents keep telling me it's all related to that. I am taking Prozak and occasionally panick attack pills. However, the recent stomach pains do not feel related.