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First of all you need to repeat LH:FSH test and transvaginal sonography
(TVS) on 3rd day of cycle to reach at correct diagnosis. It appears like an ovarian factor infertility
. Treatment what your wife is going on is ideal for this situation that is ovulation induction
with drugs like clomiphene
or letrozol and then intrauterine insemination
(IUI) once ovulation occurs. IUI is tried when one fails to conceive naturally. In IUI your best quality sperms will be used so there ll be high chances of conception compared with natural method. IUI is a simple procedure. so dont worry let the drug act and you ll be successful soon . All the best . Take care.