I am now 4 days late on my period, I usually have a regular cycles varying between 24-27 days and currently on day 31 so pretty late for me and never have been. I took this test 4 days ago, however it was dark outside and dull lighting in my house, I passed it off as negative and put it to one side, I then in the morning had another look at it to visibly see another line, it's very hard to tell on the camera as it doesn't pick it up very well but easy to see without squinting, I have since taken 2 more tests (different brand) and they've been negative. I've had sore breasts for the past 4 days, and cramping as if I'm going to start my period but then nothing comes... I mean to say evap line I can't change it.