Question about ovulation spotting

DP

Hi everyone! I’ve never noticed ovulation spotting before but I did this month. What causes it? Is it usually before or after ovulation or could it be either?

I had some very tiny faint streaks of blood in my EWCM on both CD13&14 this month. No more spotting but today CD17 is my 5th day of EWCM. The amount seems like it’s letting up though. I average 27-28 day cycles.

I don’t know when I ovulated because I’m not tracking anymore other than just observing my CM when I wipe throughout the month.