GERD, burning sensation in mouth throat.

Dear Doctor, I am 41 years old unmarried male. I am obese 107kg. I am treated for GERD. I got Endoscopy done on 31st January 19 report is fine. I have been given different medicine for GERD from Esomac L Nexpro Rantec etc but GERD symptoms persist. I get nausea feeling after eating, mouth, lips, ulcer throat burning at times pain in throat and Chest. For the past 2 months I have breathing problem, taking deep breath, dry cough and yawning. Unable to speak continuously due to breathlessness. I have Asthma urticaria problem. I have anxiety disorder problem. I am having medicine Montek AB Formoflo inhaler Asthalin rotohaler for Asthma, urticaria taking Cetrizen, Panic attack medicine Zosert, Etc. My question why lips, mouth, throat , stomach burning? What is the medicine for burning sensation? What is the medicine for Nausea? Suggest good medicine for GERD? Please advise.