His and Her Health

I've never had midcycle spotting/bleeding before, but I'm having it this month. It started on day 15 of my cycle (basically coordinating with the time of ovulation according to my temp chart) and is still going on 10 days later at day 25. On the first day the spotting was bright red but since then it has been light to dark brownish. It's only a tiny amount, enough to notice on a toilet tissue a couple of times throughout the day but not enough to wear a pad. I read that ovulation bleeding can occur but that it only usually lasts 1-3 days. I'm not on birth control meds. Is this normal or a reason to see a doctor? Thank you!