I was tested covid positive on 24th april .ri8 now i m on isolation .i having only coughing issue which.is not severe .my smell & taste came back but for last 2 days my O2 saturation level was 90 to 92 but after walking sometym like 4 to 5 mins it will gone.upper to 95 to 98.my.heart rate always between 100 to.125 for last 2 days .i m taking monocefo 200, foracort 400 inhaler, limcee& zincovit .pls advise me  should i worry ?