Just wondered if your not pg, does a evap line always show on these particular HPT's?

The reason I ask is that today I am CD53 and did another HPT - Discover using FMU, I didn't wait the 10mins as I was just too tired (5.15am). A very, very faint line showed up. I think it is a evap line, DH is convinced it is a +. (you can't tell him otherwise). Any ones experience with these tests, I would love to hear.

Ann