I went away for the weekend and forgot to take any of my meds, including thyroxine, so only about two-three days without. Now I am sooo cold and have felt so terrible today, brain not functioning at all; I agreed to take part in a survey outside the supermarket earlier and was struggling for answers to questions like "Why do you park in the top car park?" when I go a couple of times a week. Thought the interviewer would definitely scrub the interview on the grounds of insanity of interviewee. Couldn't concentrate in my music lesson, I mean why would I want to play a scale of Bflat, anyway, and teacher noted that I was playing everything VERY SLOWLY. Then went to bed and could not get warm under duvet and blanket in centrally heated house. What a day. I shall definitely wear boots to choir practise this evening, even though the hall should be warm.
I understand that levothyroxine has a half life of about eight days, so this really shouldn't have happened. It is quite a lesson to me, I shall be super careful another time - a most interesting experiment.