In a nut shell:
June 2021- diagnosed with hypothyroidism, TSH 100+, commenced on levothyroxine. Antibodies suggest hasimotos.
Fell pregnant Dec 2022- increased levothyroxine as per guidelines. Post pregnancy, returned to regular dose 125mcg.
Fell pregnant again Feb 2024, increased levo to 150mcg, towards end of pregnancy my T4 was elevated and TSH suppressed so advised to reduce dose to 125mcg.
Post pregnancy blood check, again T4 high, TSH suppressed. Advised to drop to 100mcg, plan for repeat 6-8 weeks bloods.
I have just had my bloods taken again, my is currently T4 19.7, TSH 0.149. I have been advised to reduce my levo to 75mcg, I asked my Doctor why this may be, as he was perplexed my need for levothyroxine has reduced lower than pre pregnancy, and has no answer as to why this is happening.
Since reducing my dose, I have found I am gaining weight, despite no real change in my diet/exercise (though I am 12 weeks postportam), and also increasingly tired (despite getting much more sleep than earlier post pregnancy period.)
Anybody have any suggestions why my body ha suddenly decided it doesn't need as much levo?