why I am keep getting faint positives for 3 days...

Sw

Hello, I have been testing for 3 days in the fmu... I swear... I am getting faint positives.. My line is not getting darker.. Is that evaporation line.. But it came up immediately.. I am 10days late... I am having sore breast and cramping.. I spotted as well but period since waiting for 5 days... What's going on... Please help..