Will thyroid swell in early pregnancy if you have an existing thyroid condition?

I had radiation on my thyroid about 12 years ago and have been on medication ever since. I take 150 synthyroid once a day every day. My husband and I have been ttc for almost 2 years now with no success. We are both healthy according to all the test and the doctors, i am 26 he’s 31. I am now 5 days late with all negative hpt and have noticed my thyroid is swollen. I had my tsh checked 2 months ago and all was good, i get it checked every 3 months. I am always on time and my neck(thyroid) hasn’t been swollen like this since i was first diagnosed. Have any other women experienced a swollen thyroid in early pregnancy with a previous thyroid condition and on medication?

One comment

  • lab rat

    Did you have Graves’ disease? This is caused by your body producing antibodies that stimulate the thyroid. So even if you had radioiodine, the antibodies are still there. Pregnancy usually decreases these antibodies, so Graves’ usually gets better in pregnancy, not worse. But strange things can happen, so it’s definitely worth checking out with your doctor. Women taking thyroxine need to get their dose increased as soon as they find out they’re pregnant, as the body’s requirements increase.

    One other thing – when a woman is pregnant, there is loads of a hormone called HCG (its what the pregnancy tests are looking for). HCG mildly stimulates the thyroid and can even cause hyperthyroidism. Very very rarely there can be so much HCG that it overwhelms the preg test and gives a false negative. Hopefully your doc will do some investigating.

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