White line??

Hannah
I had a friend who this happened to when she took a test. She got a white line. Like a phantom line. She was 4 weeks. She took 3 tests with me and one didn't develop and the other two had this weird white line instead of the second pink line. She went into the doctor and found out she was 4 weeks. I just took a test and the dye hovered but then I just had that same phantom white line. Has anyone else had this?