So I tested yesterday with FMU and I got a light positive. My period isn’t due for two days, out of nervousness I tested again in the afternoon but it looks negative. Is it just not as strong/concentrated? Should I test tomorrow with FMU? I’m going for a blood test tomorrow too just to make sure... I know false positives are pretty rare.. I’m not on any medications, so I don’t know what could cause the positive except pregnancy?

The bottom one is the last test I took (afternoon)