I am married since 11 years and not yet blessed with children.

الاستفتاء

I am married since 11 years and not yet blessed with children. Undergone all types of treatment and there remains no problem. Please inform me of an experimented Wazeefa. We, both husband and wife are not despondent from the infinite mercy of Allah Tha'ala even now.

الجواب حامدا و مصلیا

In this context, apart from being repenting over the Sins and making Thowba and Isthighfar sincerely, it is essential to be vigilant in performing Salath and reciting Qur'an e Kareem with due care. In addition, after Fajr and Isha Salath recite following two Ayaath 21 times each,

رَبِّ هَبْ لِي مِن لَّدُنكَ ذُرِّيَّةً طَيِّبَةً ۖ إِنَّكَ سَمِيعُ الدُّعَاءِ
and
رَبِّ لَا تَذَرْنِي فَرْدًا وَأَنتَ خَيْرُ الْوَارِثِينَ

with Durood Shareef before and after 3 times and make Dua with utmost attention and concentration. Continue this process for 40 days while having marital relationship during this period. Insha Allah situation will change and the purpose will be served.