Frustrated, Anxious, Ecstatic...Help!

Have any of you used Amazon's "Easy@Home" brand pregnancy tests? I am 3 days from my period, but my body is feeling off. Last night I grabbed one of these because I had them on hand. Did the process, and didn't realize I needed to wait 3-5 minutes for this kind. I brushed the thought off and went to bed when it only showed the 1 line. I woke up not realizing I hadn't thrown the test away, and it was positive. I've taken these before, and they've never turned positive overnight. I am obviously going to buy a different brand before I celebrate, but has anyone else experienced this with this brand, or even a different brand? Thanks in advance!