Hiya I'm just looking for abit of advice really. So af is 4 days late which isn't completely unusual in its self but I'm usually like clock work. I took a pregnancy test at 13dpo and thought I could see a hint of a line then I took a second test at 14dpo and I can clearly see two lines. However I've done 3 tests since and they've all been negative and still no sign of af! Can anyone shed some light on this? I thought a false positive was extremely rare??