I got pretty sick at the end of February 2020 and sent my sample in to the Seattle Flu Study along with the COVID opt-in. As far as I know the test was negative

I got pretty sick at the end of February 2020 and sent my sample in to the Seattle Flu Study along with the COVID opt-in. As far as I know the test was negative. There are lots of other viruses with similar symptoms that circulate around that time so not unlikely you (and I) had one of those.