Yeah, i had it also, the around valetine day, 2020. It lasted about 3 days. i never get sick. i do not vaccine. i was on my back in bed for a solid 18 hours. I do not know what it was.
Began to lift in the third week and my breathing normallized after a few months. In the meantime, my heart checked out OK.
Post nasal drip didn't completely lift until I used the Iword a month ago. It was one hour and like someone pulled the drain stopper on a utility sink.