Hypothyroidism and pregnancy
If you have hypothyroidism and are pregnant or plan on becoming pregnant, be sure to talk with your doctor, since hypothyroidism can affect the development of the baby. Some women may already have hypothyroidism when they become pregnant. Others may develop hypothyroidism during pregnancy.
The number one cause of hypothyroidism in pregnant women is Hashimoto's disease, an autoimmune disorder that causes the thyroid to become inflamed and unable to produce enough thyroid hormone. Other causes of hypothyroidism in pregnancy include existing hypothyroidism that hasn’t been treated properly, previous damage to the thyroid, removal of the thyroid to treat hyperthyroidism, and changes in reproductive hormones.
If hypothyroidism isn't diagnosed and properly managed during pregnancy, it can lead to serious complications. Always notify your doctor if you are pregnant or intend to become pregnant.