I am having severe cough and cold , my spo2 is 88-90%. I am not feeling short of breathe but this cough and cold is since 3rd jan. I am taking Ab phylline N, nebulizer of duolin and budecort repsules but since 2 days again coughing has started. There was a slight water in my right lung in chest x ray I have been tested covid negative twice during this period. My fasting sugar is 114 and BP is 136/74.