The thyroid makes hormones that help your body work. If it makes too little or too much of these hormones, you may have problems during pregnancy. Untreated thyroid conditions during pregnancy are linked to serious problems, including premature birth, miscarriage and stillbirth.
There are several possible causes of high blood pressure during pregnancy.
During the first few months of pregnancy, the baby relies on the mother for thyroid hormones. These hormones are vital for normal brain development and growth of the baby. Hypothyroidism in the mother can have long-lasting effects on the baby.
Thyroid hormone replacement is used to treat the mother. The amount of thyroid hormone given is based on the mother's levels of thyroid hormones as well as her symptoms. Thyroid hormone levels may change during pregnancy. The hormone replacement dose will likely change over time. Thyroid hormone levels need to be checked every 4 weeks in the first half of pregnancy. The levels may be checked less often during the second half of pregnancy as long as the dose does not change. The treatment is safe and vital to both mother and baby. Thyroid hormones should not be taken at the same time as prenatal vitamins. This is because the minerals in the vitamins may stop the absorption of the thyroid hormone. All newborns are screened at birth to check thyroid hormone levels.