Okay I need help

So I tested with a Walmart brand 6days sooner test last night.. I swore I say something and my fiancé said he didn’t but I could barley see it. So I put it down and like 8 minutes later I looked at it again and the place I thought I say something has a line that my fiancé saw this time.... tonight I chugged water and took a test and got a negative. I’m going to test with morning pee tomorrow but I’m just wondering if that’s happened to anyone and they ended up being pregnant