I am hypothyroid since before pregnancy. I am 19 weeks pregnant right now. When I came to know that I am pregnant I was 5 week pregnant. At 7 week pregnancy I checked my thyroid n it came 7.73 so my endocrinologist started me with mon to fri 100 mcg thyronorm and sat sun 200 mcg. After 1 mnth of taking this dose tsh came 0.4 which was normal so I was asked to continue same dose. After 1 mnth when checked it came low 0.1. So my endocrinologist changed dose to mon to sat 100 and only on sunday 200 mcg. Then last week my tsh came high 6.63.Now agn my endocrinologist asking to take same dose as before mon to fri 100 and sat sun 200. My gynaecologist asking me to taking 125 mcg daily. Whom shud I follow now? Gynaec or endo? Wudnt be 125 mcg daily a low dose as I heard that thyronorm is needed more as pregnancy progresses?

Thyroid Disorders

Pregnant

Underactive Thyroid

1Doctor Answered

Dr. Prabhakar Laxman JatharEndocrinologist46yrs exp

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lybrate-user, Thanks for the query. During pregnancy or even before conception it is essential to maintain TSH level around 2 mU/L. The recommended levels are as follows: 1st Trimester 0.1 to 2.5 mU/L, 2nd Trimester 0.2 to 3 mU/L & 3rd Trimester: 0.3 to 3.0 mU/L. These are very crucial levels, in terms of proper fetal development and for expected healthy outcome of pregnancy. So my advice is to take Thyroxine as prescribed by the endocrinologist. Plus check TSh levels every 4 to6 weeks. If level does go down to 0.1 mU/L there is no problem. But higher levls are definitely problematic. Thanks.

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