Okay so i was 10DPO and i took an Internet brought 'Midstream test' the ones with the purple cap...and i thought it looked very faint (picture on this gallery) Then i took a Superdrug brand the very next morning at 5:30am using FMU and it looked neg (threw into the bin). The same day 11DPO i took the internet one again and that was definately neg! However i was just changing the bin in the bathroom and happened upon the Superdrug one....it had a faint faint line on it! OH couldn't see it....evap?? Or what?? Help im going mad...AF is due tomorrow.