Answer
(Fatwa: 896/711=L/1430)
A pregnant woman should recite the following duas in order to have pious and obedient child:
وَمِنْهُمْ مَنْ يَقُولُ رَبَّنَا آتِنَا فِي الدُّنْيَا حَسَنَةً وَفِي الآخِرَةِ حَسَنَةً وَقِنَا عَذَابَ النَّارِ
وَالَّذِينَ يَقُولُونَ رَبَّنَا هَبْ لَنَا مِنْ أَزْوَاجِنَا وَذُرِّيَّاتِنَا قُرَّةَ أَعْيُنٍ وَاجْعَلْنَا لِلْمُتَّقِينَ إِمَامًا
But, you should leave the matter of baby boy and baby girl to Allah, whatever will be granted by Him will be better, in-sha-Allah.
(2) There is no fixed time, but due to the blessing of the zikr it is hoped that one will get married soon and the hurdles will be removed. It is better to keep on reciting the dua until marriage.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband