HI!
If you were my patient, I would encourage you to use ovulation predictors to time intercourse, as it sounds like you have been doing. I would also suggest a progesterone level on cycle day 21 to confirm ovulation. I would encourage you to double check his semen analysis. One place to start is with SpermCheck which is available on line.
IF ovulation and semen parameters are both normal, the next step is an hsg which is a dye study of the uterus and fallopian tubes to determine whether there is any blockage of the tubes. If the tubes are blocked that takes you down one path, if they are OK down another.
I would encourage you to get a consultation with a specialist in reproductive endocrinology at that point,
Good luck!
Dr B
G
How do i track my ovulation, how do i know when im ovulation.