If there is a multiverse, which one am I in

Every so often I see a film or a TV show for the first time and somehow it feels wrong that I'm only seeing it for the first time. Not in that it's a shame it took till now to see it, but that something went wrong in the timeline.
This happened with Elvira: Mistress of the Dark. I saw that a few years ago because there was a three for one bluray sale on somewhere and we only wanted two things, so we threw her in as the third, which I'm sure she'd appreciate. And when I watched it, it just seemed so strange that I hadn't seen it before. So incorrect.