Can anyone help?

Paisley

Just wondering if anyone has had a similar experience and can help me out. I had light af that started about 2 weeks ago and lasted about 4 days. Today I’m on CD14 and I have had very light spotting only when I wipe. I would say that it was ovulation spotting but I typically don’t o until around cd23. I also did opk and it was negative. Any thoughts on what it could be?