I got COVID from my adult son, who was sick with it shortly before we knew about COVID (January 2020). Both his dad and I were equally exposed (he rode with us in a truck for several hours, he coughing and running a fever in the back seat and his dad and I in the front seat). Two days later I had it - 103 fever, aches, coughing, short of breath. Very different than the flu. The shortness of breath lasted for several weeks, but after the third day my fever went down to 99.5 and stayed there - for weeks. I finally went to the dr. and was diagnosed with "severe bronchitis and sinusitis" and given an antibiotic. Months later, she confirmed that yes, what I'd had was COVID, although we didn't know it at the time.

My husband is O+ and never showed symptoms, but has a 47-year history in K-12 education and has a remarkably strong immune system. He did, however, presumably pass it through his entire school after/during my infection.

All this to say - who knows where you got it? I believe taking the recommended supplements and Ivermectin (either RX or veterinary) is both good treatment and good prevention. Focus on building a strong immune system. Don't worry about the rest.