Wanted to update this: I used MDAnywhere today for my 90 day recovery letter. I answered several questions regarding when I first had symptoms, what symptoms I had, when I tested positive, other medical conditions I have, etc. They required I upload a selfie taken today, a photo of my driver's license to verify my identity, and a photo of the test results (it would not accept a PDF so I had to convert it to a jpeg file). Once I submitted everything I got a notification my letter was ready within 10 minutes. Very easy process. Cost $69.
Also, my son somehow avoided Covid while my husband and I had it, but caught it someplace else. And he just got his first vaccine shot last week too.