Are we in with a shot?

According to my calendar I was supposed to ovulate cycle day 13. Me and dh bd'd on cycle days 10, 11, 13, 14 and 15. On cd13 I had some ewcm and cramping lightly. My opk was positive on cd13 too. Today on cd14 i had lots of cm and sharp painful stitches in lower abdomen and lower back so I figured I may have ovulated today. Do you think we got the right days?