Multiple positive ovulation tests!?

Kiki 🎀
So I started OPK testing the day after my last period so I wouldn't miss when I ovulated. I got a positive spike 4 days ago and have bd'd every night or every night since then. The weird thing is I keep testing every day at the same time and for the last 4 days I've still gotten positive spikes!! What does this mean? Can someone help? Thank you!!