Dry cough from past 9 days in evening,took rtcpr tests on day 6 too,it came -ve but I was advised to take budecort 100 inhaler  for three days along with below medicines ,if symptom persists to start antibiotics azee 500..I was asked to still isolate for few more days..is there any tests to double confirm covid or allergy,please help   Medicines :  Pan 40mg, Allegra-M [at night] and Amrodil syrup – 2times ,steam inhalation with vicks vapourb, and gargling with warm salt water.. I have a history of seasonal allergy but never on steroids I used to leave to go off on its own due to covid I am worried about my cough..