Family Planing causing health difficulties
Question

                My understanding is that planning for
      having kids is OK in Islam, but limiting it is not. I have four kids, wal Hamdu li Llah,
      and I am in my 36th year and about to turn 37. Actually I love kids, and I feel guilty
      having my IUD, a means to avoid pregnancy, for my 5th year now. My husband is a good
      Muslim, wal Hamdu li Llah, but he does not like me to have more kids. Finally, I decided,
      and told him about it, next month, in-sha-Allah, I plan to remove that device from my
      body. For you information this device is causing problems in my menstrual timing (monthly
      period), and also causes infection. 
    Thanks, and baraka Allahu feekom.
Praise be to Allah.The answer to your question is found in the following three
    points:
Giving birth is the right of both husband and wife, and
        neither one of them has the right to deprive the other from doing so.

It is prohibited to take any measure which would
        permanently prevent pregnancy, or cause infertility. It is permissible, however, to use
        temporary birth control methods to delay pregnancy, as in the case of delaying pregnancy
        for the two years of breast feeding the first child.

It is prohibited to use any birth control method which
        would harm the body, as the Prophet  said: "Do not (impose)
        harm, nor (inflect) harm". He also said: "And your body has a right
        upon you".