Is the T3 working?

Is it? I'm sure this is a question my ENDO will be asking me at my appt next week. I don't think I have an answer to that. I just don't know. It seemed to be working when I started taking it mid-February. But skip forward a month, I'm in San Francisco to brainstorm with my 'clients' (really, they were my co-workers that have a stake in the database I am charged with creating) on my main project. I couldn't talk. A few times I caught myself pausing because I couldn't finish my thought or sentence, and I had to say, 'brain not working.' I haven't had to say that in a month, and there I was, in an important meeting and not able to formulate a sentence. Crap.

"Was it the meds, were they not working?" I have no idea. So, I started to review my daily routine - is it something I am doing that is making this happen again? My observations are as follows:
-I've been drinking a lot more coffee, daily. Not Peet's strength coffee, but coffee nonetheless.
-I've been getting a lot less sleep for about a month now. I think it is mostly work stress, but more recently it has been pet stress.
-I've had a few days where I felt like I was going to fall asleep driving home.
-For the first time today (actually, yesterday 4/6), I felt sleepy at work.
So, I am thinking and hoping that this is just from lack of sleep, not that the new med is not working.

I did have my 6wk blood draw yesterday, to see what my levels are with the lower T4 and the added T3 dosage change from February. Just in time for my ENDO appt next week. I'm trying to put together some questions for my ENDO. He always asks me what questions I have after he has gone over all of his stuff with me, but sometimes I'm still processing what he just told me, so I'm not even sure what to ask. One time my question didn't even make sense to me, and all I remember him saying was, "I think you are asking about....." LOL - must've been that thyroid brain fog. Once or twice I did go to my appt with questions in hand, but I think it would be nice to give him my questions ahead of time so he knows what my concerns are going into my appt. So far, I only have two questions for him:
1. Will the Genzyme Thyrogen shortage affect when my WBS is scheduled in June?
2. Was my ultrasound in December a 'careful neck ultrasound', where all levels are checked? If it wasn't, I want one.