Hello. I am Saraswati aged 71 who has been vaccinated for covid-19 already(both doses have been given) but after a week of the second dose i am covid positive and am having the following symptoms- Dry cough, fever, feeling of coldness in body. My fever peaked at 103 degree celsius. I have tried alex syrup for cough but to no avail. Im having rigorous coughing especially at night. A point to note is that i am under medication for blood pressure which is dacia-mt regularly and isosorbide dinitrate in case of severe condition. Please suggest the best for me.