No Ulcer but stomach burning nausea feel

I am 40 years old unmarried Male. I am 116kg obese 5feet 7 inches in height. I am suffering from heart burn, stomach burning sensation. Chest pain. Muscle pain. Nausea from 11 January 19. I have giddiness. I now have low to normal BP. I am taking High BP 140/89. I was taking medicine Tazloc H 40 mg. Cetrizen for Urticaria. Montek AB Formoflo and Asthalin rotocap for Asthma. Inzofresh 10mg for sleep. Master health check up done 6 months ago at Aarthi Scan I am fine. ECG taken on 25th January 19 is fine. I met Cardiologist he gave me Eritel CH 40 mg and Tazloc 40mg but I stopped it due to low BP. Neurologist has given me Topaz 50mg, Emikind MD for giddiness headache and numbness. Gastroenterologist did Endoscopy for me on 31st January 19 report is fine. He is asking me to do esophageal motility test. I can swallow well. What could be my problem? Why stomach burning, nausea, chest pain shoulder pain?