Symptoms of anxiety or mild attack.

I am experiencing chest pain with left arm pain which radiates towards back which lasts few niutes to hours sometimes a day for me for the past four years but in between it gone and suddenly I feel light chest pain while running so I stopped running. Like this occurs for me 3 or 4 days a week and suddenly it might gone also for the past four years. Currently last few days I felt excessive burping with chest tightness and nausea with light headedness then I went to hospital it is acid reflux so they gave me medicine I took ecg also ecg is normal then three days it is gone then again after two weeks I got this symptoms again I didn't sleep for two days because night there is excessive continuous burping with chest tightness and with left arm pain with little bit of short breath then I drank water and I walked for 2 hours it went and then again I gone to hospital doctor sid it will be acid reflux but I don't know I will go to cardiologist to check 2 weeks back I got ecg which is normal