Question. Someone help

Patina

So I am suppose to get my period on the 21st of this month.

And yesterday I went to the bathroom and when I wiped I seen such a small dot of redish pink blood... what does this mean, is this normal? Could I be pregnant? I have been trying for awhile. But this month I tried two days before my expected ovulation day. So I am not sure?

It happens again today, when I wipe small red dot on the toilet paper.