Your TSH is too high which means you are very hypo at the moment. Also your vitamin D is too low. I use the BetterYou spray once a day because mine is also lowish. Symptoms of being both hypothyroid and hyperthyroid can be very similar in my opinion.
Hopefully someone who is more knowledgeable than I am will be along to comment shortly.
Your T3 is very low as well ... how are you feeling? because with those results I bet you feel terrible. Just to add I once had a TSH of 9 because I was overdosed on PTU and I could hardly get out of bed.
You have my sympathies ... my own family used to tell me to pull myself together when I was feeling really ill. Other people have no idea of how ill we are feeling. x
I'm taking 75mg I was in 125mg until I ended up in hospital with a very low TSH which was was out of range I also had Covid, which I now think has done more damage to my Thyroid hence the spike in Thyroxine as the damage was done and low TSH followed by going Hyper and trip to A&E. I think I'm more hypo now my thyroid is probably doing even less than it used to.
That was vast reduction in levothyroxine from 125mcg to 75mcg
Hardly surprising that results are now terrible
Most doctors have no idea how a tiny dose reduction may be all that was needed ....reduction to 112.5mcg may have been all that was needed ....if Ft3 was over range
Just low a TSH means absolutely zero ....ALWAYS get Ft4 and Ft3 tested
All thyroid tests should be done as early as possible in morning before eating or drinking anything other than water and last dose levothyroxine 24 hours before test
You now clearly need 25mcg dose increase in levothyroxine and bloods should be retested in 6-8 weeks
Important to regularly retest vitamin D, folate, ferritin and B12 ....especially now that you are very hypo
What vitamin supplements are you currently taking
Many people find Levothyroxine brands are not interchangeable.
Once you find a brand that suits you, best to make sure to only get that one at each prescription.
Watch out for brand change when dose is increased or at repeat prescription.
Many patients do NOT get on well with Teva brand of Levothyroxine. Teva contains mannitol as a filler, which seems to be possible cause of problems. Teva is the only brand that makes 75mcg tablet. So if avoiding Teva for 75mcg dose ask for 25mcg to add to 50mcg or just extra 50mcg tablets to cut in half
Physicians should: 1) alert patients that preparations may be switched at the pharmacy; 2) encourage patients to ask to remain on the same preparation at every pharmacy refill; and 3) make sure patients understand the need to have their TSH retested and the potential for dosing readjusted every time their LT4 preparation is switched (18).
Levothyroxine is an extremely fussy hormone and should always be taken on an empty stomach and then nothing apart from water for at least an hour after
Many people take Levothyroxine soon after waking, but it may be more convenient and perhaps more effective taken at bedtime
No other medication or supplements at same as Levothyroxine, leave at least 2 hour gap. Some like iron, calcium, magnesium, HRT, omeprazole or vitamin D should be four hours away
Your thyroid may be taking a bit of a rest due to still being in recovery from COVID. This would be a natural response to illness and then it will increase thyroxine production as you recover. But you've reduced your levothyroxine rather a lot.
You haven't got elevated thyroid antibodies but have you had an ultrasound showing Hashimotos thyroiditis such as an enlarged thyroid or nodules?
Big changes in thyroid status can make a person feel unwell. You need to maintain stability and any change in dose should be very small and slow and definitely no more than 25mcg change at a time then retest in 6 - 8 weeks.
When you ended up in A&E and were told you were overmedicated, what were your actual thyroid blood test results that evidenced overmedication?
Thanks for the links yes I have read something about that. I feel I have wicked combo of long covid and hypothyroidism at the moment. My thyroid hurt while I had Covid. I think the covid caused me hyperthyroid symptoms putting me in hospital. Now what's left of my thyroid is producing even less thyroxine combined with the levothyroxine reduction which now I've realised hasn't helped.
I'd show these studies to whoever reduced your thyroxine and discuss raising your dose again, based on your test results which seem to show undermedication.
Even to someone who only adjusts doses by TSH, , a TSH of 9 shouts 'i need an increase'
Since you don't have antibodies, maybe it's more to do with covid effect on HPT axis , than destruction of thyroid itself ?
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Help interpreting results 
My Thyroid test results
I had my bloods done as suggested
My latest test results, still not well
