But you also need to have a documented positive test for the current ongoing COVID infection too. At least for the pharmacy-only program. Of course you could get tested at the same pharmacy.
Actually in any scenario, if I had symptoms and tested positive, I would call my physician and discuss the situation and get a prescription if they agreed. No need to go around the system. My physician has all of my medical records and recent blood work. And knows what other drugs I am taking and what my other health conditions are.