Spotting before ovulation

Rebecca

AF ended 10 days ago and yesterday I started spotting. I didn’t notice until I wiped and it was mostly brownish but there was a little dark red also. Today there is a little brown spotting. I have been testing with the Clearblue Advanced OPK (that gives your 4 most fertile days) and its been a blinking smiley face which means I am not at peak yet but in high fertility. I’ve never had spotting before in between my period so I am concerned. I’ve read about ovulation spotting but I have not yet ovulated. Has anyone had this before?