The anxiousness can be a few things, are you weaning off a previous med? There may be this "crossover" thing, till you achieve the full therapeutic dose, most pdoc's will try to get one at the lowest therapeutic dose vs taking more than the patient needs to achieve "balance/stabilization."
And as you mentioned, therapy, when begining therapy or changing to a new T, that may create some anxiety or even the process of accepting DX (es) and starting the working(s) with it can stir some angst.
It's always best to keep in touch with the prescribing pdoc, explain what you are feeling, it may be a matter of dose changes.
Awhile back, I was feeling a low, asked the pdoc if we should go up another 25mg from my normal dose, we tried it and I ended up getting slightly agitative/anxious, sooooooo I called him and we agreed to stay on my usual dose, and wait a little bit, also talk with him or a therapist if things weren't returning back on track.
There are times we can shortly go through various moods, and it doesn't mean we are headed towards any episodes, everyone, disorder or no disorder experience different feelings/moods, it's when they aren't just a passing thing or are starting to consume us, that some sort of professional intervention may be needed, may come in a form of meds and/or talk therapy combined.
Check this out with your pdoc, see what he or she has to say about what you are experiencing, just to help assure yourself if this is to be expected and is only temporary.
Meanwhile, always feel free to come here, to PC, and talk to us.
Please take care now,
DE

Lots of luck with this, and keep the faith.

((((((((( SecretGarden ))))))