Not ovulating?

A

This was my 3rd round of Clomid 50mg cd5-9. My obgyn is not monitoring my cycles but based on OPKs and bad cramping, I believe I ovulated and then got my period 12-13 days after positive OPK. I got my positive OPK yesterday on cd13. Today is supposed to be the day I ovulate but haven’t had any cramps yet. Does this mean that maybe I didn’t ovulate?