I allways thought false positives vanish out or just look more of a shadow , They certainly look BFP , But if you are taking other tests that are clearly Neg then maybe they were just a faulty batch ?? . I would complain to the company . I have heard ladies say on here they do not like clear blue , Something to do with the blue dye , And allot praise First response or Asda home tests and superdrug ones .
Good luck . xxx .