1 positive, 2 negative pregnancy tests?

Ivana
Ok, so I don't know what's going on. 2 Days ago I took a test and it was faint positive. I posted the picture here an most of you said it is faint positive. Today I took another test with FMU and it was negative. I was confused so I took another one from the same urine sample and it was also negative. What the hell? I called my obgyn and she told me to come on January 21 st. I can't wait that long. I wanna know what's going on. Did anyone had the same situation?