Hi thanks for contacting HCM... You have fever ...So there could be acute inflammation or infection... You are also more prone for infection as you have diabetis... Take antibiotic like levofloxacin for 5 days. Maintain hydration with more water. Over the counter laxative can be taken for constipation.... Fruit juice taken more like orange juice , apple juice with low glycemic index fruits. Take fiber foods more like wheat bran , whole grain etc which suits in diabetic case. Ginger tea also helpful herbal remedy... If cough and other congestive symptoms present then chest x ray needed to rule out bronchitis like condition.... Healthy and balanced diet needed.... If bronchi constriction occurs then bronchodilator given.... If inflammation and congestive symptom occurs benadryl like drug needed . Take care. Dr.Parth