Oh you definitely had it. I know some other people who had pretty much the same happen before it hit the news, and it definitely was more virulent in the early days.
I agree about the immunity, I haven't been sick at all since I had it spring of 2020, hubs either, and we've been exposed easily a dozen times since then. When my kids got it this past spring they stayed home to spare others, but there was no distancing from us.
In fact we went to Sturgis motorcycle rally in August of 2020, and no one there was masked or distancing. The News would have loved condemning it as a super spreader, but they were only able to link "one possible covid related death"...out of 460,000 people who came through that week from all over the country. For me that was the moment I truly knew that the really dangerous virus was the news spreading fear.
RE: Out of the Mouth of Babes...the Utter Sweetness of Children!