She did ‘umrah and did not complete saa’i, then she did ‘umrah several times after that
Question

                A long time ago I went with my family to do ‘umrah and I did not complete saa’i at that time because I was tired. I do not remember whether I had reached puberty at the time or not, then I forgot about it. Please note that I have done ‘umrah more than once since then. Praise be to Allaah, I got engaged and my engagement lasted for a year, then due to some circumstances there was a separation. I heard a fatwa which said that a woman did not complete her ‘umrah and got married, and the shaykh ruled that her marriage was invalid and she had to repeat it. After I heard that, I remembered my incomplete ‘umrah and this matter has preoccupied my mind a great deal. What do I have to do now? What should I do with regard to my incomplete ‘umrah? What about the engagement that took place? Does it come under the heading of haraam? And the last question with regard to the future, if I get engaged -- will there be any problem with it?.
Praise be to Allah.
    Saa’i is one of the essential parts of ‘umrah, without which 
    it is invalid and incomplete. If a person does ‘umrah and does not do saa’i 
    and was not prevented from completing ‘umrah by an enemy or sickness that 
    prevented him from completing his ‘umrah, then he is still in his state of 
    ihram and he has to go back and do saa’i and cut his hair. This applies to 
    the adult who is accountable. With regard to someone who is not an adult or 
    accountable, the matter is easier. A number of scholars are of the view that 
    his ihram is not binding, and whatever he has done will be accepted from 
    him, and if he interrupts his ihram or does not complete his ‘umrah, there 
    is no sin on him. This is the view of the Hanafis and Ibn Hazm, and was the 
    view favoured by Shaykh Muhammad ibn ‘Uthaymeen (may Allaah have mercy on 
    him) among later scholars. 

    See: al-Sharh al-Mumti’, 7/21; Majmoo’ Fataawa Ibn 
    ‘Uthaymeen, 22/148 

    Based on that, if you did this ‘umrah before you reached 
    puberty, you do not have to do anything. 

    If it was after you reached puberty, and you did a complete 
    ‘umrah after that, then the complete ‘umrah will suffice for the one that 
    was incomplete. That is because your ihram for the second ‘umrah was 
    superfluous, because you were already in ihram, so the saa’i and cutting the 
    hair count towards the first ‘umrah, and thus your obligations have been 
    discharged. 

    We asked Shaykh ‘Abd al-Rahmaan al-Barraak (may Allaah 
    preserve him) about a woman who did ‘umrah and forgot to cut her hair, then 
    she went and entered ihram for another ‘umrah and did tawaaf and saa’i and 
    cut her hair.  

    He replied: Overlapping two ‘umrahs is not correct according 
    to the fuqaha’ of the Muslims, so the second ‘umrah is superfluous, and her 
    cutting her hair counts towards the first ‘umrah. End quote. 

    If your marriage contract was done after the valid ‘umrah -- 
    as we understand from your question -- then it is a valid contract, because 
    it took place after exiting ihram following ‘umrah. 

    And there is nothing wrong with you doing the marriage 
    contract in the future. 

    And Allaah knows best.