My dr said that it's okay to exercise if the symptoms are above the neck, within reason of course. If down in the chest--forget it. I'm fighting the same thing right now. I got in good rides Fri-Sun but yesterday was definitely a no-go, especially with our record heat.
(One in the household tested negative for covid last Thurs with a home kit; another went in for a PCR test yesterday and we're awaiting those results. If covid, our luck finally ran out.)