I'm on cd23, and by my calculations, 10dpo. Went to the toilet and when I wiped there was a streak of red blood. Now I'm more inclined to believe my period is starting 5 days early, which has never actually happened before, but it's easier to believe than I might actually be pregnant, but I'm hoping beyond hope that it's implantation. I believed implantation blood was meant to be brown, am I wrong? This was red, about 2inches long and 1inch wide. What do you think? Anyone have the same with a positive outcome?