Du'a for blessing of pregnancy: Endure thou patiently (O Muhammad)

وَٱصۡبِرۡ وَمَا صَبۡرُكَ إِلَّا بِٱللَّهِۚ وَلَا تَحۡزَنۡ عَلَيۡهِمۡ وَلَا تَكُ فِي ضَيۡقࣲ مِّمَّا يَمۡكُرُونَ إِنَّ ٱللَّهَ مَعَ ٱلَّذِينَ ٱتَّقَواْ وَّٱلَّذِينَ هُم مُّحۡسِنُونَ

Wasbir wa maa sabruka illaa billaah, wa laa tahzan 'alayhim wa laa taku fee dayqim mimmaa yamkuroon. Innallaaha ma'al-ladheenat-taqaw wal-ladheena hum muhsinoon

Endure thou patiently (O Muhammad). Thine endurance is only by (the help of) Allah. Grieve not for them, and be not in distress because of that which they devise Lo! Allah is with those who keep their duty unto Him and those who are doers of good

Qur'an 16:127-128 (An-Nahl)