Yeah, I am in the same boat with no doctor.
You could internet search your town and antibody testing for Covid and see what pops up.
I was just doing that as a matter of fact. Just so happens there is a labcorp in one of the community hospitals about 25 miles away. I’m glad you all were discussing this because I thought I had to have a doctor. But I will have to contact one to get orders? What did you do?