Opk confusion!!!

K • Boy mama, Troy 1/25/14 💙 3 angel babies 💙 Jameson 5/10/19 💕 Shepherd 6/9/20

Soooo I started opk tests on CD 5, to me it looks like I had a positive on CD 8... but CD10-12 I have had spotting. I’m so confused- any advice?? I’m still going to continue to test but I don’t understand why I would be spotting if I had ovulated. Help 🤷🏻‍♀️ thanks in advance!!! 💕💕💕