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Thyroid UK
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1 prem baby! Help for baby no 2!?

Hi peeps,

Had my baby boy 8 weeks early due to Hashimotos (undiagnosed at the time however was aware I was hyper years ago)... does anyone know of any endo's in the U.K. that actually know about hashis/hypo and pregnancy! I was completely mismanaged when I was under the care of a Gynae with my baby boy!

I am absolutely petrified about even trying for number 2 to the point that we may not even bother but really would like some help and advice re managing medication etc

It just seems all the endos who deal with pregnancy are specialists in diabetes opposed to thyroid matters!?

Has anyone had a similar experience?

2 Replies


Undiagnosed hypothyroidism is probably the reason your first baby was premature, not Hashimoto's. If you are optimally medicated with TSH between 0.4 - 2.5 it's unlikely you will have hypo/pregnancy problems again. Levothyroxine dose should be increased by 25-50mcg as soon as pregnancy is confirmed.


Management of primary hypothyroidism: statement by the British Thyroid Association Executive Committee

13. The serum TSH reference range in pregnancy is 0·4–2·5 mU/l in the first trimester and 0·4–3·0 mU/l in the second and third trimesters or should be based on the trimester-specific reference range for the population if available. These reference ranges should be achieved where possible with appropriate doses of L-T4 preconception and most importantly in the first trimester (1/++0). L-T4/L-T3 combination therapy is not recommended in pregnancy (1/+00).


Email louise.roberts@thyroiduk.org for a list of member recommended endos.

1 like

Thank you 😊


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