might think I'm crazy...

Ok so I grabbed a opk test by accident instead of the pregnancy test and didn't realize until after I peed on it haha. I'm 7 days from AF (I know early testing 😚 but I couldn't help myself yet again!) well it was a "positive", I know I ovulated last week bc the line was darker than the control line. Well today by accident; the line isn't as dark as the control but I would say medium to light? What is that all about?! Totally confused.