Did you already try ovulation tracking and medication like clomid?
Ovulation tracking can be done, but taking Clomid or any other fertility drugs should really be discussed with a professional. There are downsides of these drugs, and need a case by case evaluation.
That's why you should def contact Bonei Olam or Atime, they can refer you to a doctor that specializes in the field you personally need help.
And who says it's a fertility problem at all? Could be she ovulates perfectly and there's something else in the way.