I bit the bullet and have messaged the GP this morning and requested a blood test ... I'll wait and see if they'll allow it.
I realised whilst crying AGAIN in the shower this morning that something was very wrong, as I was struggling to get up again this morning, unable to go for my usual walk and crying several times a day (even whilst I was away:() along with other stuff there has to be something a miss somewhere.
I did however do a sensible check when my mind came back to me briefly and looked closely at NICE guidance specifically related to Graves Disease - there are different recommendations for other types of thyroid conditions - nice.org.uk/guidance/ng145/... :
There were fewer relapses to hyperthyroidism with block and replace treatment compared with titration. The committee noted that block and replace treatment could theoretically provide greater stability and require fewer medical appointments than titration regimens. Therefore they recommended a choice of either regimen for adults with Graves' disease....Short-term combined testing with TSH, FT4 and FT3 is needed to inform decisions about the need for additional courses of treatment or dose changes with antithyroid drugs.