Hi I'm having dry cough.. not a proper cough it's like an irritating in throat coughing is not there just that tickling feeling inside throat. It is usually more in the evening and when I'm in closed environment and not present in the morning. I don't have any other symptoms. I have  bronchial ashthma and currently residing in mumbai where the weather is extremely fluctuating. I tried cough syrup but didn't continue. Should i be worried about covid? Please advice. I usually don't take warm gurgle or vapour. But I'm having vitamin c and zinc tablets daily.