Got a positive ovulation test and...

Cloie

Yesterday I had a “almost positive” OPK test at 9AM. At noon, I had a full-blown positive OPK. We BD’d this morning, about 20 hours after my positive OPK... and will again tonight. When is the ideal timing after getting a positive OPK? I am new to this. I am wondering if I waited too long? Or if there is still a chance?