We’re doing it all “right” with no luck

I have regular periods- 26-29 days, I have ovulation pain (confirmed with bbt and done ovulation strips), and my sweet husband and I have sex when we are supposed to... and it’s just not happening.

I find it so hard to understand how we can be doing it all “right” and under the “best” circumstances, and still fall short each month.

We are on cycle 8 now— I know it takes a normal healthy couple up to a year. It’s just surprising, and frustrating, that we know exactly when I ovulate, we BD exactly when we are supposed to, yet it doesn’t happen for us— month after month.

Anyone else in this position?