During the days of pregnancy, duas for the protection from calamities should be read in abundance. Also the performance of Salaat regularly is a protection from calamities. Always try and be in Wudū.The following duas and surahs should be read in abundance during pregnancy:
أَعُوذُ بِكَلِمَاتِ اللَّهِ التَّامَّاتِ مِنْ شَرِّ مَا خَلَقَ
I seek refuge in the perfect words of Allah from the evil of that which He has created.
حَسْبُنَا اللّهُ وَنِعْمَ الْوَکِيلُ
Allah suffices us and He is the best guardian [3:173]
وَإِنِّي سَمَّيْتُهَا مَرْيَمَ وِإِنِّي أُعِيذُهَا بِكَ وَذُرِّيَّتَهَا مِنَ الشَّيْطَانِ الرَّجِيمِ
And I command her and her offspring to Thy protection, from the evil one, the rejected. [3:36]
Also it is mentioned that Hazrat Fatima (radiyallahu anha) reports that when it was time for her to deliver her child, “Rasulullah (PBUH) sent Umme Salma (radiyallahu anha) and Hazrat Zainab (radiyallahu anha) to me with the instruction that they read Aayatul Kursi, surah Al-Falaq and An-naas and the following verses for easy delivery:
إِنَّ رَبَّكُمُ اللّهُ الَّذِي خَلَقَ السَّمَاوَاتِ وَالأَرْضَ فِي سِتَّةِ أَيَّامٍ ثُمَّ اسْتَوَى عَلَى الْعَرْشِ يُغْشِي اللَّيْلَ النَّهَارَ يَطْلُبُهُ حَثِيثًا وَالشَّمْسَ وَالْقَمَرَ وَالنُّجُومَ مُسَخَّرَاتٍ بِأَمْرِهِ أَلاَ لَهُ الْخَلْقُ وَالأَمْرُ تَبَارَكَ اللّهُ رَبُّ الْعَالَمِينَ
ادْعُواْ رَبَّكُمْ تَضَرُّعًا وَخُفْيَةً إِنَّهُ لاَ يُحِبُّ الْمُعْتَدِينَ
Lo! Your lord is Allah who created the heavens and the earth in six days, then mounted he the throne. He covereth the night with the day, which is in haste to follow it, and hath made the sun and the moon and the stars subservient by his command. His verily is all creation and commandment. Blessed be Allah, the Lord of the worlds! Call on your lord with humility and in private: for Allah loveth not those who trespass beyond bounds. [7:54, 55]
Also Aayatul Kursi (in surah Al-Baqara) and the two Ayats from surah Al-A’raf [7: 54, 55] are to be recited near the woman in throes of birth. Surah Al-Falaq and An-Naas are also to be read and thereafter blown on her.
Recitation of Surah Maryam daily makes the delivery easy and the child born will be pious.
Recitation of Surah Qadr seven times a day makes the delivery easy.
Try and recite at least one verse of Quran during pregnancy.