Waking up with nausea, lots of burping , gas. happening regularly.

Concerned: Although the symptoms are consistent with gastritis/ esophagitis, i still think you need an evaluation by a physician urgently. At 62, this still could be a presentation for a heart related problem. In the meantime, start taking over the counter antacids like tums (calcium carbonate). If the symptoms are worsening i would recommend going to the emergency department.