there are protocols here for early / acute covid treatment
https://covid19criticalcare.com/covid-19-protocols/i-care-early-covid-treatment/they are by a group of doctors who disagree with the NIH about
the vaccine only approach - at the expense of other effective treatments.
many of the options can be pursued without access to a medical doctor if needed
but it should go without saying that in your position it would be wise to be cautious about
checking the medications against your pre-existing conditions.