thread: Under Active Thyroid in Pregnancy - Thyroxin

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  1. #1
    BellyBelly Life Subscriber

    Jan 2006
    11,633

    do you know what your results were?
    Overly low T4 in pregnancy can affect fetal development. Very high TSH can affect their thyroid development, but only from aruond 2nd trimester as their thyroid hasn't formed before that.
    In my first pregnancy I had ery low T4 at the start due to high estrogen levels after hyperstimulating (I had my thyroid removed a few years back and am on complete replacement) and high TSH, but DS developed fine anyway.
    This pregnancy I've only just, at aournd 16 weeks, had to increase my dose. It may be that you didn't need any extra until this ponit anyway, in which case nothing untoward could have happened. If you're doctor was not worried, and your levels were normal for non-pregnancy, then I would suspect you're only just outside normal anyway, so it's probably nothing to worry about.

  2. #2
    Registered User

    Jan 2008
    Just Coasting
    1,794

    Hi, If they are very low in the first tri then it can effect the developement of the fetus, but if they're just a little bit low it shouldn't be much of a concern. I Don't have a thyroid gland (thyroidectomy in 09 due to graves disease) so I have to take thyroxine for the rest of my life. It was found that my levels were too low at about 12 weeks and my endo increased my dose. He said it wasn't too much of an issue though, as like yours they weren't extremely low ITMS. Please don't worry, i think you'll be fine

  3. #3
    Registered User

    Jul 2007
    Sydney
    3,861

    Thankyou so much everyone, it helps to know others are and have been through it with no problems. Im actually feeling quite calm, and I am sure if there was a problem they would have said something. Thankyou everyone for sharing your thoughts and your own journeys, hugs