Bought a clearblue test and tested straight away (not with FMU but I held my pee for a long time lol) and it showed a very very faint line (blue-ish in colour) which was clearly visible after I took the test apart (anyone has done it before?? If yes, was it a BFP?). Then I took another test from a poundshop, and again there was a very very faint pink line. Am I going crazy? Shouldn't the lines be darker at 10DPO?