I had 2 very faint positive tests, called my doctor because I was fed up with it had no HCG in my blood. Decided ok fine ill accept that apparently test can be faulty. Since then I have had spotting every other day only a couple times a day that was only there when I wiped. I decided for shits and giggles I'll take another test and lone and behold there is still a faint line there and I know I have a good amount of LH in body because I took an ovulation test as well.