possible ovulation spotting help tmi

today is cd 13 and the last 3 days have had high readings on my opks .well tonight i go test again with an opk cause i feel pain in right ovary ,i go and test got another blinking smiley face ,tmi i wipe and little blood ,wipe again and more blood .Could this be ovulation spotting never had it before .if it is when should i ovulate and how long can it last .please help feeling lost