Is it possible to see a tiny it's bit of a line of HPT is BFN? I'm pretty sure these are negative but if I move them and look at them from a certain angle in the light I can almost see a shadow of a line, but not an actual line. Is that normal? You can't see it unless you look really hard, and I just wanna make sure it's BFN, cause they've all been that way when I've taken them the past two months. Just wanna make sure it's not BFP and I'm just not realizing it.