After some time has elapsed, the couple desire that Allah Taa'la bless them with a child and thus through marital consummation Allah Taa'la grants their wish. The first stage that follows is that of pregnancy. A person should not be ashamed of being pregnant or treat it as a big burden, as there are many beautiful virtues and rewards for being pregnant.
Rasulullah (Sallallahu alayhi wasallam) said: "The woman that dies in her virginity or during her pregnancy or at the time of birth or thereafter (in nifaas) will attain the rank of a martyr."
It is mentioned in another Hadith that Rasulullah (Sallallahu alayhi wasallam) said: "Does it not please you (O Women!) that when you conceive from your husbands while he is pleased with you then that woman will receive such reward equal to that of a fasting person in the path of Allah and spending the night in ibaadat. When her labour pains commence the inhabitants of the earth and the sky are unaware of the stores of comfort that are prepared for her. When she delivers and breast feeds her child then she will be granted a reward for every gulp of milk, and if she had to remain awake during the night for the sake of her child, she will receive the reward of emancipating seventy slaves in the path of Allah. O Salaamat! Do you know who these women are? They are pious, upright, delicately natured but yet are obedient to their husbands and not ungrateful to them."
Rasulullah (Sallallahu alayhi wasallam) said: "A woman from her pregnancy till the time of weaning her child is like one protecting the boundaries of the Islamic state. If she passes away during this period she attains the reward of martyrdom."
In another Hadith it is mentioned that, "The woman who dies of labour pains is regarded as a martyr (shaheedah)."
A woman should therefore gladly bear these difficulties patiently and calmly as she will be highly rewarded.
Hazrat Mail bin Yasaar (radiyallahu anhu) narrates that Rasulullah (Sallallahu alayhi wasallam) said: "Marry such women who are loving and produce children (in abundance) because (on the day of Qiyaamah) I will vie with other Ummats and be proud of your numbers."
In another Hadith Rasulullah (Sallallahu alayhi wasallam) said: "Even the miscarried foetus will drag its mother towards Jannat if she exercised patience with the hope of acquiring reward."
Rasulullah (Sallallahu alayhi wasallam) said: "When the woman breast feeds then on every gulp of milk the child receives, the reward is as though she has granted life to a being and when she weans her child, then the angels pat her on her back saying: CONGRATULATIONS! all your past sins have been forgiven, now start all over again."
[By sins is intended the minor sins, this is also a great reward.]
Source: Pregnancy by Moulana Moosa ibn Ahmad Olgar courtesy of Beautiful Islam