I'd retest. you either have some of the worst luck ever, or you had a false positive test.
There are people who have flown on flights with actively infectious cases of Covid. Following hygiene practices, none of the passengers got infected.
Symptoms (or the lack thereof) are not an indicator of whether or not someone has contracted it.
OP has stated they've left their home twice in the past 5 months, the last time 4 weeks ago and they just tested positive.
The chance of them being an asymptomatic carrier is actually pretty low, otherwise we wouldn't be doing 14 day quarantines.
Is it possible OP is a rare edge case? Sure. But not likely.
I'm thinking this may be true. Dr. John Campbell has a fantastic video[1] that suggests we may be overlooking one possible symptom in otherwise asymptomatic populations: Skin rashes. That doesn't mean, of course, that everyone gets skin rashes with COVID-19, but it appears that it may be an early clinical feature of the disease even in people who are otherwise spared the worst.
The theory is one may find detectable RNA fragments, without the person truly having an active infection (I.e. they’ve already recovered).
There is also just human error with sample handling, contamination, etc.
https://www.wsmv.com/news/mt-juliet-man-says-even-with-no-te...
It's sometimes someone driving to a testing site and then leaving the line. If that's true and they're not rechecking your personal information at the swab, it's unsettling because then everyone's results are now off-by-one (or more).
There are other cases where people have been told they have COVID after never even having been in line for a test. Not that they might have it via contact tracing, but that they tested positive from a test they never took (or got in line for).
Not to mention there was the cast of a Goat and an Orange testing positive in Tanzania:
https://www.independent.co.uk/news/world/africa/coronavirus-...
What is going on with these tests?
The actual incidence of this kind of error is incredibly small.
People doing deliveries are probably the most at risk right now, and the outside of deliveries, the plastic bags, I always treat them as if they are full of Covid-19.
And I'm sure most people don't go to restaurants any more, but they get food deliveries all the time.
I cook instead. One risk less.
I mean, if you group 10 samples from a test center, what's the probability of one of them being positive? Isn't it close to 1.0?