OPK Question

First time using OPKs. My cycle is typically anywhere from 26-30 days. I got my first postive opk yesterday on CD 14. Both this app and another estimate I ovulated today on CD 15. We had sex CD 8, 9, 11, 13, 14, 15. I had another positive opk this morning and a negative this afternoon. With the negative opk, does that mean I ovulated sometime between yesterday and today? Should we have sex tomorrow? Or is my fertile period over? Attached pic of this cycle’s

stats.