This hasn't happened before?

[kel08]

Hi lovely ladies!
So, I think I may have been experiencing pregnancy symptoms, and I did a first response hpt this morning. My periods are due Monday.
As the urine went up the stick, the positive line came up as it went past, then disappeared? What the?
Has this happened to anyone else?

[PumpkinZulu]

This usually happens to some extent as the urine crosses the dye strip. If it disappears after a few seconds, then it was just the dye getting wet as the urine crossed over it. Sorry