Can I Find Out If I Had a Past Case of Covid?

Hi folks, it’s Kristen in NYC. The majority of Americans have had Covid at least once, and one reader wonders if it’s possible to be among that majority without realizing. But first...

My spouse and I have avoided Covid (we think), by getting vaccinated, boosted and taking care to mask in most public circumstances. With the high percentage of asymptomatic cases, we wonder if there is a way to learn whether we have had Covid? Kelby, San Rafael, California