A faint line is a faint line, with pink tests if you see a faint line that has a bit of colour in, then it is a positive. But you can only trust this if you get it within the time limit... if you think you had a positive, then wait 48 hours and test again. make sure you test with first wee of the day and it will be more concentrated.
When i got my bfp on Weds, i tested in the evening and got a faint line and i have tested again each morning and it has gradually got darker.
Im not sure about it dissapearing after the time limin hun, but my tests have stayed positive.
disappearing line = BFN a positive should stay for at least 48 hours after the test was taken, I have noticed that positives rarely disapear. I still have my hpt from my first pregnancy and it still has big bold lines on it almost two years old.
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