Hey so I did a FR this morning (12dpo) at the 3 minutes mark there was a white line I let it sit for another 1-2 minutes as I’ve heard don’t look at it after 5 minutes, by the 4 minutes mark the white had disappeared and it look to be maybe a faint pink lime, the after the 5 minutes maybe around 6 minutes it looked completely negative? What does this mean?

I bought a 7 pack of them so all the same pack.. I’ve taken 5 tests so far and they all seek to have this white line?