She has to fast for two months but she broke the fast for the sake of her foetus; does this affect the continuity of her fast?
Question

                I am a muslim women married for almost 2 years,in my past life i had unintential murder of someone by a drug and i did not knew the concequences,i am not sure but that guilt was in me may be i was the reason to kill,so in your website i searched and i saw that kaffara of unintential killing is 2 months fast or free a slave,so obviously i had the only choice of fasting 2 continuous months,so i made up mind of fasting and start fasting with my husband permission,i fast almost 25 fasts then i found out that after almost 2 years of trying i coceived,(got pregnant) alhamduliAllah (all praise is for Allah),and we got this news after almost 2 years of failure of getting pregnant,so what should i do now,shud i fast full 60 fasts after completion of pregnancy or only 35 fasts,

plz clarify me should i fast 35 or 60 now after completion of my pregnancy.
Praise be to Allah.
    Firstly: 

    The expiation for accidental killing is to free a believing 
    slave. If there are no slaves or one cannot afford that, then one has fast 
    for two consecutive months. It is not permissible to move to the option of 
    fasting except in the case of one who cannot find a slave or cannot afford 
    the price of one. 

    It says in al-Mawsoo‘ah al-Fiqhiyyah (10/129): Fasting 
    is the second option, if one is not able to free a slave, as Allah, may He 
    be exalted, says (interpretation of the meaning): 

    “…and whosoever kills a believer by mistake, (it is 
    ordained that) he must set free a believing slave and a compensation (blood 
    money, i.e. Diya) be given to the deceased’s family unless they remit it. …. 
    And whoso finds this (the penance of freeing a slave) beyond his means, he 
    must fast for two consecutive months in order to seek repentance from Allaah. 
    And Allaah is Ever All‑Knowing, All‑Wise.” 

    [al-Nisa’ 4:92]. End quote. 

    Secondly: 

    If a person has fasted some days of the expiation, then 
    something happens that is a legitimate excuse such as sickness or travel, or 
    if a woman menstruates or bleeds following childbirth (nifaas) and stops 
    fasting, that does not interrupt the continuity. Then when he recovers from 
    his sickness or the woman becomes pure after menstruating, he or she should 
    complete the fast and they do not have to start all over again.  

    Shaykh Ibn ‘Uthaymeen (may Allah have mercy on him) said: If 
    he breaks the fast for a reason that makes it permissible to break the fast, 
    such as sickness travel, this does not interrupt the continuity. If it so 
    happens that this man who started the fast for two consecutive months – 
    whether that was expiation for zihaar (a jaahili form of divorce in which 
    the man says to his wife “you are to me like my mother’s back”) or expiation 
    for having intercourse during the day in Ramadan or expiation for 
    manslaughter – travels and breaks his fast, that does not interrupt the 
    continuity because travelling makes it permissible not to fast. But if he 
    used travelling as a trick to break the fast, we say to him: it is not 
    permissible for you and you have to refrain from eating and drinking, 
    because obligatory duties cannot be waived by means of a trick, and if you 
    do not do that then you have to start all over again. End quote from al-Sharh 
    al-Mumti‘, 13/273 

    It says in Fataawa al-Lajnah al-Daa’imah, 21/320: 

    The basic principle with regard to the way in which expiation 
    for accidental killing is to be done is that the fasts should be 
    consecutive, and interruptions in the fast that do not affect its continuity 
    are matters that a person has no choice about, such as sickness with which 
    one cannot fast, or menses in the case of a woman. This does not interrupt 
    the continuity; rather one should resume from where one left off… End 
    quote. 

    But is a woman’s pregnancy on its own regarded as a 
    legitimate excuse which permits the woman to break the fast without 
    interrupting the continuity thereof? 

    The answer is that pregnancy on its own does not make it 
    permissible for the woman to break the fast unless it involves hardship or 
    she fears for her baby; in that case it is an excuse. 

    Based on that, it is essential to consult a doctor. If he 
    says that you should not fast, then in that case you are excused, then when 
    the excuse no longer applies, you should continue from where you left off. 

    But if the doctor says that fasting will not affect the 
    pregnancy, then you have to complete the fast whilst you are pregnant. We 
    hope that there will be no blame on you for breaking the fast because you 
    thought that fasting would affect the pregnancy and you do not have to 
    repeat the days you already fasted; rather it is sufficient for you to 
    complete what you had started. 

    And Allah knows best.