Heavines/warm-lower chest. Suggest.

I am having this problem since quite sometime now. I feel bit heaviness/warmth/giggles in lower middle chest area. Sometimes this is there in left side or even right side of chest. I had Sompraz L (morning) and Sompraz 40 (evening) for 30 days. Still the problem was there. Then i went for endoscopy in December, doctor told that there is slight injury in food pipe. He prescribed me Sompraz 40 (evening only) for 3 months. I am taking this tablet for around more than 2 months now, initially this issue subsided but i am getting the same issue again since past 10-15 days despite of taking regular medicine. Sometimes i also feel a very mild pain in lower abdomen which subsides within minutes but does come back sometimes. Got scared so had got ECG, ECHO, TMT, Lipid profile, troponin done in November 2015 and all these results were fine. Bit confused what to do as this problem has started again. More details: Vomiting - no Motion - normal Please suggest.