Did i maybe just test too early?? Could there still be a chance?

[Lulu085]

i am now 15dpo. I had spotted some very light pinky red blood 7dpo & again at 10dpo. I then took a test last thursday which was 11dpo & got a negative. I never spot during any of my cycle, never have, so this led me to believe it might possibly have been implantation bleeding. Do you think i tested too early? Do you think there could still be a chance? I'm due on in 2 days