Two people in my office were out sick. One came to sit at my desk to help me out with a DB query after she was done with sick leave. I got sick a few days late

Two people in my office were out sick. One came to sit at my desk to help me out with a DB query after she was done with sick leave. I got sick a few days later. Went to the doctor who said they couldn't give COVID-19 tests since they didn't have it, but she gave me a regular flu test. Results came back and I was flagged as positive for Coronavirus, but it came with a note from my doctor saying there was no way to confirm that it was COVID-19. I assume it was given symptoms and timing.