Is it still too early?

Krista

Yesterday at 7-8 dpo I thought I got the faintest faintest line with my FMU. See picture.

I tested again that evening, and it was a BFN. I thought maybe it was because my urine was diluted but when I tested with this morning’s FMU, it was still a BFN :(

I know it’s still too early but I read somewhere that there is an hcg spike at implantation, could that be it? Or was that just a false positive or evap line?