Hi ladies, I'm new to this. I'm due on, in Monday and hav signs that I cud 'possibly' b pregnant. Hot flushes, sore boobs, dizziness. So I took a sainsburys digital test that said 'not pregnant' but when I took the test out of the cartridge there are two blue lines, be that the 2nd line is faint. Does this mean anything or just indicates that the test has worked?