Has anyone else gotten a positive but tested with a different brand and negative? I tested last month with first response 6 days sooner and got this faint line. I thought I was crazy but my friends could see it also(3 first resp test). The next day I tested with clear blue and was neg. needless to say but I was not pregnant. I tested yesterday with first response just to see and it came back faint again. Has this happen to anyone else? I feel like this brand gives your hopes up.