Hello Ma'am. There is no need to take Eltroxin/Thronorm as being Diagnosed as a case of Hypothyroidism. Elevated TSH level in pregnancy is quite often normal.  Please don't take unnecessarily those pills and obviously affect the growth of the baby. I sincerely advice you to seek a opinion from Gynaecologist for further persuation and evaluation.  Kindly repeat Thyroid Function test after your delivery and TSH levels comes to normal level. Take care. Bye.