I have a friend that travels globally for his job (up until WFH). He was really sick at the end of March for a couple weeks. Headache, body aches, respiratory issues. At the time testing was extremely limited and he did a tele-med thing with his PCP who didn't want him in his office. He was told that it was most certainly COVID and to self-quarantine and go to the ER if it got to where he couldn't breath. If he went, he would be tested - otherwise no test. He toughed it out for 2 weeks at home before the symptoms went away and since he was already WFH, he went on with life. He was one of the thousands, or tens of thousands, or hundreds of thousands of cases that is not part of the stats.
Good news is he did not infect any of his immediate family but has no idea who or how many he infected before the symptoms hit.