The dosage of levothyroxine
may be needed to be increased up to 30-50% during pregnancy
. The aim of treatment is to maintain the level of TSH below 2.5 mIU/ml in early pregnancy and below 3 mIU/ml in later pregnancy. Monitoring is done every 4-6 weeks through assay of T4 and TSH levels. Elevated levels of TSH and untreated hypothyroidism
has affects on the baby as well as the pregnancy outcome. The baby may be low birth weight
, premature delivery is possible and there is increased risk of neonatal distress. You may consult your doctor for further clarifications. Good luck.