Ovulation question

Angela • 34 years old. I have one amazing little boy who we prayed and waited for 4 years for! He is an IVF baby! We are so blessed to be expecting our 2nd boy. He’s our little surprise!
Hello! I'm on cd 16 and still have not had a +opk or a temp spike. I'm scared I'm not going to ovulate this cycle. What cd do you normally ovulate?