low tsh and pregnant

[kiki888]

Hi,i am 9 weeks pregnant,have been on levotiroksin 50,1 tablet a day, for last 5 years.(as well as bromocriptin 2.5 which i stopped taking once i ve got pregnant).Until now my tyroid hormones have been normal,but last test i ve done 4 days ago showed my tsh 0.1mu/l. I realised that level shoud be 0.2-5.0.My doctor said that i should repeat the test in may and that was that.I am very scared for the pregnancy.please help.Thanks

[karenros]

Why did u take bromocriptine? is it just to become pregnant or did u have any other problem too?

[kiki888]

Thank you very much for your answer,will see my doc on monday.Take care

[Super_sally888]

Hello,

Don't worry.  It is normal for TSH to read very low in pregnancy - this is becuase pregnancy hormones affect TSH and the test result.  Actually, your doctor should be monitoring for FT3 and FT4 and adjusting your meds based on this.  It is normal during pregnancy to have an increase of thyroid meds of up to 50%.

in addition, it is better to be slightly hyper than hypo for the baby's sake.  However, your thyroid med at 50 mcg is not a full replacement dose and your thyroid may actually be kicking in during the pregnancy.

Don't worry.  Just keep monitoring.  But do see your doctor regularly and report to him if you have any symptoms or questions.

You can ask me anything related.  I have hypothyroid and am 7 1/2 months pregnant. I also took bromocriptine to get pregnant.

Congrats on your pregnancy.