“So far as we know”, since you’re targeting that sentence, let’s use the entire statement, thank you.

I have not had a serology. I have had negative rapid home tests.

I am curious as to if I had a very mild form before or after their bouts that I did not test during that time for, or one of the home tests that I took was a false negative. There’s a large margin of error regarding incubation times and low viral load.

https://www.fda.gov/medical-devices/safety-communications/home-covid-19-antigen-tests-take-steps-reduce-your-risk-false-negative-fda-safety-communication#:~:text=However%2C%20if%20you%20perform%20an,t%20have%20COVID-19%20symptoms.