Nice bit of swedesplaning there (I’m swedish so I can call it ;-)).

But seriously the question to ask yourself is how many people have I been with close >15 minutes before during and after the trip. That’s your potential infections number (there are other ways to spread but much rarer).

The international bit is really only relevant if you are going to an area without community spread - and Stockholm is long down that path now. The different “strains” aren’t that different, so that’s not a factor - yet.

As long as you’re not hosting parties, your fine.