Additional anecdata: This is similar to what happened to me. I got covid earlier this year and had it bad for a week, had stuffiness and a possible sinus infect

Additional anecdata: This is similar to what happened to me. I got covid earlier this year and had it bad for a week, had stuffiness and a possible sinus infection for a few weeks, and was tired all the time for a few weeks after that. The coughing lingered for a while too. Eventually I got back to normal just waiting it out (disclaimer: this is not a recommendation).