i am 12 dpo today and i took a first response test tonight. within 2 mins a 2nd line can be seen. BUT, it is barely there, as in i see it and then it disappears and i can't see color in it, its white as much as i can tell, but like i said as my eyes see it, and stare it disappears, but its there if that makes any sense! im thinking it might be an evap line but like i said it can up within 2 mins. any thoughts?
I did try and mark it with two white dots where the "line" kinda is..