Hi Dr: I'm 10 weeks pregnant (my second child). My TSH level is 6.9, and T4 is 15.4 .Should I take tablets to stimulate the thyroid function? During my first pregnancy my TSH level was 5 and T4 was 10.86. I was given Thyronorm tablets (50 mg) throughout my pregnancy. My GP was suggesting that this time I may not need any thyroid stimulating medicine as my thyroid levels are just on border line. I'm a bit concerned. Please advise. Can I take 50 mg tablet itself for this pregnancy as well.