hi this piece of info may help you? tell your doctor if you are pregnant plan to become pregnant or are breast-feeding. methimazole should not be used during pregnancy or breast-feeding. if you become pregnant while taking methimazole call your doctor immediately. methimazole may harm the fetus. so with this in mind i would not plan to get pregnant just yet. good luck
can anti thyroid drugs such as methimazole (that's what i am taking) keep me from becoming pregnant. i have hyperthyroid and had radioiodine 15 months ago but my thyroid is still over producing. i am almost 28 years old and have a 6 year old son and desperately want to have another child. i know that the medication i am on is not recommended during the first trimester and i have had 2 periods that were abnormal. just wondering if maybe it was a posible pregnancy but the thyroid drugs caused my body to reject the pregnancy.