Ovulation Tests

I posted yesterday but left out details so I deleted and am posting again. I clearly tested positive for ovulation on CD 12. The next day was literally nothing so I assumed my surge was over. Fast forward to this Monday, I had some cramps and thought “what the hell, go pee on something” 🤷🏻‍♀️ to my surprise it looked like I was working on another surge. Now today, it’s blazing. But, I’d be 8 dpo right now going off the first test. Af isn’t due for another 9 days. I’ve also read that this can be possible with pregnancy, anyone experience this?