Ruling on ongoing secretions that appear during pregnancy
Question

                When a woman is pregnant she sometimes has ongoing yellow or white secretions. Does she have to do ghusl and wudoo’ every time?.
Praise be to Allah.
      With regard to the secretions that occur in women when 
      pregnant and otherwise, if they come from the uterus – which is usually 
      the case – they are taahir (pure), but if they come from the urethra, then 
      they are impure (najis). 

    These secretions do not necessitate ghusl, but they do 
    invalidate wudoo’, unless they are ongoing and do not cease, in which case 
    they come under the same rulings as incontinence, so wudoo’ must be done for 
    each prayer after the time for prayer begins. 

    Shaykh Ibn ‘Uthaymeen (may Allah have mercy on him) said: 
    What appears to me to be the case after studying the matter is that the 
    fluid that is emitted by a woman, if it does not come from the urethra and 
    in fact comes from the uterus, is pure (taahir). 

    This is the ruling on these secretions with regard to purity 
    (tahaarah): they are pure (taahir) and do not make the clothing or body 
    impure (najis). 

    With regard to the ruling when it comes to wudoo’, this 
    secretion invalidates wudoo’ unless it is continual, in which case it does 
    not invalidate wudoo’, but the woman should not do wudoo for prayer until 
    after the time of the prayer has begun and she has taken protective 
    measures. 

    But if it stops and starts, and it usually stops during the 
    times of prayer, then she should delay the prayer until the time when it 
    stops, so long as she does not fear that the time for the prayer will end. 
    If she is afraid that the time for prayer will end, then she should do 
    wudoo’ and take protective measures and pray. It makes no difference whether 
    the discharge is small or great, because it is all coming from the same 
    place, so either a little or a lot of it invalidates wudoo’. 

    End quote from Majmoo‘ Fataawa Ibn ‘Uthaymeen 
    (11/284) 

    What is meant by “taking protective measures” is that she 
    should put a piece of cloth or cotton or the like over her private part so 
    that it will absorb whatever comes out of this fluid and prevent it 
    spreading on her garments or body. 

    For more information, please see the answer to question no.
    38703 and
    119482. 

    And Allah knows best.