Is this an evap or BFP

Chica1982

Hi ladies

So these last couple of days my tests have turned blue but only after a while - one after a hour and others after 20min

These are today’s tests. First one and then another two hours later. Both started grey then blue after a while with thin lines - would say within 10mins for both. They are so thin am thinking they are evap? I have about 5 of these tests now :(