My mouth taste is always bitter for last 2 months. I have continiuos burping .burps stuck in my throat .I feel very uncomfortable. And I have also diagnosed with allergy rhinitis. I have done chest X-ray, lft, crp and Cbc the report is normal. Is there any link between gastric issue and allergic rhinitis or any possibility of stomach infection like overgrowth of bad bacteria because I am not able to include curd and salad in my diet. Please advise me some natural ways to treat my problem because I have already taken my medicines ( homeopathic, ayurvedic, allopathic)