cm with blood?? help me :( I'm scared

Yesterday, day 21 of my cycle (period was due on 9 days) I found this, I was having eggwhite cm these days, but this one has like brown blood. I'm really scared, I've never had something like this, also I haven't had sex, I was just fingered by my bf, so it's not implantation, but then, what is it?

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