ovulation bleeding?

Hi all
I'm just wondering I have a 29 day cycle, DP and I DTD cd 13-15 I got a positive opk cd 14. Tonight when I went to the bathroom there was a streak of brown discharge on the toilet paper, could this be ovulation spotting? If so does anyone know when this usually occurs? I'm cd 15 atm.
And do you think we've covered our bases so to speak bd wise?
TIA

If the spotting continues for more than 5 days I'd go see a dr . Just to cover ur bases.