I think I had it back in the day when it was just appearing in Italy. I was on a skying trip and a week after we came back the first case was confirmed. I felt really bad for 2 weeks, breathless, tired, like bad flu but not much of a fever. For some time I felt off, tired, unfocused. And then it just slowly dissapeared I think... but I got the vaccine 1,5 year after the susspected infection so I didn't feel a difference much. If I had covid confirmed, I would think I had long covid.