O my Lord, You are all-powerful. A fiery iron arrow is coming towards me fast. My Lord, let it burn me personally, if You so desire, but please do not let it burn and abort my embryo. Please do me this favor, my Lord.
This incident took place after the death of Abhimanyu, the husband of Uttarā. Abhimanyu's widow, Uttarā, should have followed the path of her husband, but because she was pregnant, and Mahārāja Parīkṣit, a great devotee of the Lord, was lying in embryo, she was responsible for his protection. The mother of a child has a great responsibility in giving all protection to the child, and therefore Uttarā was not ashamed to express this frankly before Lord Kṛṣṇa. Uttarā was the daughter of a great king, the wife of a great hero, and student of a great devotee, and later she was the mother of a good king also. She was fortunate in every respect.
(Srimad Bhagavatam-----1:8:10-----purport).

After the garbhādhāna purificatory process, there are certain other saṁskāras like sīmantonnayana, sadhabhakṣaṇam, etc., during the period of pregnancy, and when the child is born the first purificatory process is jātakarman. This was performed duly by Mahārāja Yudhiṣṭhira with the help of good and learned brāhmaṇas like Dhaumya, the royal priest, and Kṛpācārya, who was not only a priest but also a great general.
(Srimad Bhagavatam-----1:12:13-----purport).

When Gāndhārī came to know that her would-be husband was a blind man, to follow her life companion she decided to become voluntarily blind. So she wrapped up her eyes with many silk linens, and she was married to Dhṛtarāṣṭra under the guidance of her elder brother Śakuni. She was the most beautiful girl of her time, and she was equally qualified by her womanly qualities, which endeared every member of the Kaurava court. But despite all her good qualities, she had the natural frailties of a woman, and she was envious of Kuntī when the latter gave birth to a male child. Both the queens were pregnant, but Kuntī first gave birth to a male child. Thus Gāndhārī became angry and gave a blow to her own abdomen. As a result, she gave birth to a lump of flesh only, but since she was a devotee of Vyāsadeva, by the instruction of Vyāsadeva the lump was divided into one hundred parts, and each part gradually developed to become a male child.
(Srimad Bhagavatam-----1:13:3-4-----purport).

The heavenly denizens from the upper planets used to visit the palace of King Kuntibhoja, and Kuntī was engaged for their reception. She also served the great mystic sage Durvāsā, and being satisfied by her faithful service, Durvāsā Muni gave her a mantra by which it was possible for her to call for any demigod she pleased. As a matter of inquisitiveness, she at once called for the sun-god, who desired couplement with her, but she declined. But the sun-god assured her immunity from virgin adulteration, and so she agreed to his proposal. As a result of this couplement, she became pregnant, and Karṇa was born by her. By the grace of the sun, she again turned into a virgin girl, but being afraid of her parents, she quitted the newly born child, Karṇa.
(Srimad Bhagavatam-----1:13:3-4-----purport).

Jarāsandha was a very powerful king of Magadha, and the history of his birth and activities is also very interesting. His father, King Bṛhadratha, was also a very prosperous and powerful king of Magadha, but he had no son, although he married two daughters of the King of Kāśī. Being disappointed in not getting a son from either of the two queens, the King, along with his wives, left home to live in the forest for austerities, but in the forest he was blessed by one great ṛṣi to have a son, and he gave him one mango to be eaten by the queens. The queens did so and were very soon pregnant. The King was very happy to see the queens bearing children, but when the ripe time approached, the queens delivered one child in two parts, one from each of the queens' wombs. The two parts were thrown in the forest, where a great she-demon used to live, and she was glad to have some delicate flesh and blood from the newly born child. Out of curiosity she joined the two parts, and the child became complete and regained life. The she-demon was known as Jarā, and being compassionate on the childless King, she went to the King and presented him with the nice child, The King was very pleased with the she-demon and wanted to reward her according to her desire.
(Srimad Bhagavatam-----1:15:9-----purport).

The embryonic body of Parīkṣit which was in formation after Uttarā's pregnancy by Abhimanyu, the great hero, was burned by the brahmāstra of Aśvatthāmā, but a second body was given by the Lord within the womb, and thus the descendant of Pūru was saved. This incident is the direct proof that the body and the living entity, the spiritual spark, are different.
(Srimad Bhagavatam-----3:3:17-----purport).

Diti was conscious of her offense and was anxious to be excused by Lord Śiva. Lord Śiva has two popular names, Rudra and Āśutoṣa. He is very prone to anger as well as quickly pacified. Diti knew that because of his being quickly angered he might spoil the pregnancy she had so unlawfully achieved. But because he was also Āśutoṣa, she implored her brāhmaṇa husband to help her in pacifying Lord Śiva, for her husband was a great devotee of Lord Śiva. In other words, Lord Śiva might have been angry with Diti because she obliged her husband to transgress the law, but he would not refuse her husband's prayer. Therefore the application for excuse was submitted through her husband.
(Srimad Bhagavatam-----3:14:34-----purport).

Diti prayed for the mercy of Lord Śiva very cleverly. She prayed: "The lord can cause me to cry, but if he likes he can also stop my crying because he is Āśutoṣa. He is so great that if he likes he can immediately destroy my pregnancy, but by his mercy he can also fulfill my desire that my pregnancy not be spoiled. Because he is all-auspicious, it is not difficult for him to excuse me from being punished, although he is now ready to punish me because I have moved his great anger. He appears like a man, but he is the lord of all men."
(Srimad Bhagavatam-----3:14:35-----purport).

Diti was very aggrieved to learn that because of her untimely pregnancy her sons would be demons and would fight with the Lord. But when she heard that her grandson would be a great devotee and that her two sons would be killed by the Lord, she was very satisfied. As the wife of a great sage and the daughter of a great Prajāpati, Dakṣa, she knew that being killed by the Personality of Godhead is a great fortune.
(Srimad Bhagavatam-----3:14:51-----purport).

By the force of the pregnancy of Diti, the light of the sun and moon was impaired in all the planets, and the demigods of various planets, being disturbed by that force, asked the creator of the universe, Brahmā, "What is this expansion of darkness in all directions?"
(Srimad Bhagavatam-----3:15:2-----translation).

Because Brahmā is almost on an equal footing with the Personality of Godhead, he is addressed here as the god of the demigods, and because he is the secondary creator of this universe, he is addressed as the sustainer of the universe. He is the head of all the demigods, and therefore he is addressed here as the head jewel of the demigods. It is not difficult for him to understand everything which is happening in both the spiritual and material worlds. He knows everyone's heart and everyone's intentions. Therefore he was requested to explain this incident. Why was the pregnancy of Diti causing such anxieties all over the universe?
(Srimad Bhagavatam-----3:15:4-----purport).

The virtuous lady Diti had been very apprehensive of trouble to the gods from the children in her womb, and her husband predicted the same. She brought forth twin sons after a full one hundred years of pregnancy.
(Srimad Bhagavatam-----3:17:2-----translation).