Hi there,
two days ago, I took a first response test and the faintest line appeared (you have to wiggle it around to see it). That night, I took another one and it was an obvious positive second pink line. I’m due my period next Tuesday, however I would have thought that the other tests I have been taking would pick up a second line but they haven’t at all. Could it be because first response is so sensitive and the others aren’t and it’s still early? Thank you