I was diagnosed with hashimotos after having my 2nd child 23 years ago (my mum had Graves’ disease so it’s in the family), it took about 18 months, but got back to normal levels and feeling ok on 175mcg Levo a day, and stayed ok on that dose for about 10 years. My local hospital trust used to have a “thyroid register” and I was automatically sent a blood form in the post every 3 months, that I could just pop into haematology with, get my bloods taken, then I’d be informed by post of results and if my meds needed adjusting or not. That all stopped about 10 years ago, and if I wanted my levels testing I had to go to gp, who would then request bloods etc. I started feeling crap, so went and got them done, my levels were way off and I was titrated up to 250 levo daily over the next few months, my levels came back into range. Stayed on that dose for a while, then had a panel of routine bloods taken for something or other, thyroids were included, never heard anything so presumed all good, a few months later became really poorly, thought I was having a nervous breakdown, my mind was constantly racing, I was in a constant state of high anxiety, heart constantly pounding, so I went to the gp, who looked at the bloods I’d had taken months before, the thyroid result was there, in red, well into the HYPERthyroid range, so I’d basically been overmedicating for months into a state of thyrotoxicosis. I obviously stopped taking the Levo, was put on beta blockers, and referred to endocrinology, by the time I got my appointment (a few months) I was massively hypothyroid again. My TSH was 98! The consultant couldn’t believe I was walking and talking normally, so I then had to go through the whole titration again, and am now back up to 225mcg daily. Basically when you’re medicated to a “normal” range you’re just left to it, even though with hashimotos (which is the most common thyroid disorder) your thyroid can fluctuate in the amount of hormone it produces, so you really should be tested regularly. Also many people would benefit from being on t3 as well as levo, but the nhs just won’t fund it. It’s a fucking shot show to be honest.