There is no hadeeth which says that having an easy pregnancy is a sign of special mercy from Allah
Question

                im 8 months pregnant & Alhamdulillah my husband is very caring and humble towards me now. i have read hadiths that if a husband is pleasing and humble during pregnancy she will get much reward ...is it so?

Also i have read that Aisha R.A. said Allahs mercy will be more on a women by following 3 signs 1. her demand 2. her engagement 3. her pregnancy will be made easy...is it so?

But i am sleepless,restless, also due to sugar daily i have to inject insulins due to which i am also suffering from itches, severe leg pain, white discharge problem due to which after every compulsory prayer again i have to repeat wudoo for sunnath prayers ....now i am fed up and decided not to have any child hereafter...does it mean I am not good or i am not completely under Allahs mercy...
Praise be to Allah.
      We have not 
      found anything in the saheeh Sunnah or the reports from the Sahaabah and 
      Taabi‘een to indicate that an easy pregnancy is one of the signs of 
      special mercy from Allah, may He be exalted, to a woman. That is one of 
      the matters of the unseen regarding which we must adhere to what is 
      mentioned in the texts and reports, and not attribute any such thing to 
      the Prophet (blessings and peace of Allah be upon him) unless we are 
      certain of it and that it is saheeh. Allah, may He be glorified and 
      exalted, says (interpretation of the meaning):

    “And 
    follow not (O man i.e., say not, or do not or witness not, etc.) that of 
    which you have no knowledge (e.g. ones saying: "I have seen," while in fact 
    he has not seen, or "I have heard," while he has not heard). Verily! The 
    hearing, and the sight, and the heart, of each of those you will be 
    questioned (by Allah)”

    [al-Isra’ 
    17:36]. 

    Moreover, the 
    mercy of Allah, may He be exalted, may be in wellbeing, but it may also be 
    in trials and tests, according to the knowledge and wisdom of Allah, may He 
    be glorified and exalted. It was narrated from Muhammad ibn Khaalid, from 
    his father, from his grandfather – who was a companion of the Messenger of 
    Allah (blessings and peace of Allah be upon him) – that he said: I heard the 
    Messenger of Allah (blessings and peace of Allah be upon him) say: “If a 
    certain status has previously been decreed by Allah for a person, and he 
    does not attain it by his deeds, Allah afflicts him in his body or wealth or 
    children.”

    Narrated by 
    Abu Dawood in as-Sunan, no. 3090. Classed as saheeh by al-Albaani. 
    This hadeeth indicates that if a woman is tested with difficulty and 
    hardship in pregnancy, that may be a sign of Allah’s mercy towards the woman 
    and of what she will have with Allah of reward and great status, especially 
    if we remember the hadeeth of the Prophet (blessings and peace of Allah be 
    upon him) in which he said: 
    
    “There is no calamity that befalls a Muslim but he is expiated thereby, even 
    a thorn that pricks him.”

    Narrated by 
    al-Bukhaari (5640) and Muslim (2572). 

    Thus it is 
    clear that whoever wants to attain the mercy of Allah, may He be exalted, 
    let him be patient at the time of calamity and let him be grateful at the 
    time of blessing, for in that case he will be in a very good state and will 
    not be distracted by thinking about what Allah, may He be exalted, intends 
    by this calamity, for that is one of the matters of the unseen of which he 
    has no knowledge, but by being grateful and showing patience, he will attain 
    the mercy and good pleasure of Allah. 

    Sufyaan 
    ath-Thawri (may Allah have mercy on him) said: 

    There is no 
    one who understands Islam but he regards calamity as a blessing, and ease as 
    a calamity. 

    End quote from
    Hilyat al-Awliya’ (7/55). 

    One of the 
    earlier generations said: 

    Be content 
    with Allah in all that He does to you, for He does not withhold from you 
    except in order to give you, and He does not put you through trials except 
    in order to bring about your well-being, and He does not cause you to be 
    sick except in order to heal you, and He does not cause you to die except in 
    order to bring you back to life. So beware of failing to be content with Him 
    even for a moment, lest you be deprived of mercy.

    End quote from
    Madaarij as-Saalikeen, 2/216 

    But if there 
    is some symptom of illness that prevents you from having another child, that 
    does not indicate that you are a bad woman or that you have been cast away 
    from the mercy of Allah – Allah forbid. Rather that is a common occurrence 
    and there is no blame on you. 
    “and [Allah] has not laid upon you in religion any 
    hardship”[al-Hajj 22:78]. 
    But we also think that the difficulty and hardship that you are facing at 
    present mean that this is not an appropriate time to take such a decision. 
    How many women have thought in such situations the same as you are thinking 
    now, but when Allah made the birth easy for her and she had rested for a 
    while after that hardship, she once again began to long for pregnancy and 
    childbirth, and to raise little ones. Perhaps if Allah makes the birth easy 
    for you – in sha Allah – and you rest for a while after that, maybe Allah 
    will help you with another pregnancy. But it is too early to make such a 
    decision now 

    For more 
    information, please see fatwas no. 161204 and
    150171

    And Allah 
    knows best.