Severe chest pain in center and left side for last 6 months. Back/neck pain. Never belched before but always burping now. Cardio, neuro, gastro clear.

See a doctor. You need a full detailed evaluation. Although this sounds superficially like a case of gerd, the causation remains in question and you also must exclude the possibility of their being a cardiologic or other etiology for the chest pain. Go see a general internist or family practitioner.