If you are hypothyroid, please do the following: 1. Have your serum thyroid function checked for T3, T4, FT3, FT4, S-TSH, and if necessary, your doctor will ask you to have your TPOAB and TGAB checked at the same time. 2. Consult an endocrinologist to adjust your thyroxine dosage and be prepared for pregnancy. 3.If you find out you are just pregnant, please visit your doctor promptly and ask your endocrinologist to adjust your TSH level so that it is safer to be between 1-2. 4, the entire pregnancy should be under the guidance of the doctor to use eugenol and other drugs, early pregnancy and late pregnancy thyroxine will have its own regular changes, patients should not follow their own little knowledge of blind judgment, arbitrarily change their dosage!!!