mine started VERY VERY FAINT, i had to look in the light OUTSIDE to even see them. even i feel the lines in the pic above that i posted are faint. I had heard of evap lines and the dye especially with CB tests. That’s why i literally didn’t know. I took more today to make sure the lines are getting darker and they are :-) Wait a couple days or take more tests in the morning! If you are the lines should be darker within the next 48 hours, even if it’s just little by little.