Wa `alaykum As-Salamu waRahmatullahi wa Barakatuh.

There are no prescribed prayers to be offered; therefore, you may use any of the standard Du`as to invoke the mercy of Allah for a smooth delivery.

Let me mention some of the Du`as and readings you may use freely:

1 Read Fathiah and the last three surahs of the Qur`an

Then read the following du`as

Yaa hayyu yaa qayyoom bi rahmatika asthagheeth

(O the Ever Living One, the Source of all beings, I invoke Your mercy and help)

Laa ilaaha illaa antha subhaanaka innee kunthu mina al-zzalimeen

(There is no god but You; glory be to You; I am one of those who have wronged their souls; so help me!)

Allaahumma laa sahla illaa maa ja`althahu sahlan wa antha taj`alu al-hazana idhaa shi`tha sahlan

(O Allah, nothing is easy unless You make it easy; You can make a difficult task easy if You wish; so make this task easy for me)

Allaahumma innee as`aluka bi asmaa`ika al-husnaa an tuyassira lee wa thudhhiba anee al-adha wa taj`ala lee min amree Yusra

(O Allah, I call upon You by invoking Your most beautiful names to make this matter easy for me and remove all hardship and bring me ease and comfort)

Rabbi yassir walaa tu`assir wa tammim bil-khayri

(My Lord, make it easy for me and don`t make it hard for me)

You may continue to read the following

Subhaana Allaah al-hamdu lilaah laa ilaaha illa Allah Allahu akbar wa laa hawla walaa quwwatha illaa billaahi

(Glory be to Allah; praise be to Allah; there is no god but Allah; Allah is Great; there is no power or strength except by the will of Allah).

I pray to Allah to make it easy for you and bless you with a healthy offspring who would be an asset and joy for you and your family.

Almighty Allah knows best.