My brand of thyroxine is same as it has been for at least 5 years as I stick to the one chemist who doesn't change supplier so its not that

Having had two thyroid tests in 5 weeks and both being normal for all readings and the last one was a result I like to stay at its doubtful its to do with meds etc,
I haven't had caffeine from many years ( avoid non decaf coffee or diet coke or dark chocolate) and I only drink very very weak earl grey tea or one decaf coffee a day - please don't say it can be side effect of earl grey tea

I have got an appt with a acute medicine consultant on Tuesday afternoon, saw my GP who said he bets they will just offer reassurance and yet another 24 hr ecg but I am going to ask for a 72 hr one this time so that they can hopefully pick up all the weird things my heart can do

Huge thanks to everyone who has replied its good to be able to discuss this. I will let you know what happens on Tuesday!