I had/have the same issue. Rest assured it is temporary even tho it's horrible and it will happen from time to time. Occupy yourself with "normal" life, try socializing, keep yourself occupied with things you consider fun and don't lose hope. You aren't going crazy. Eventually you will switch back to "normal mode". Accept it, realize it's "normal" for some during heavy panic and anxiety, and try not to dwell on it too much.
Btw, I forgot to add, this feeling did get worse for me while taking prozac, you should definitely ask your therapist for something else.
Second edit: for me 0,25 of Aprazolam really helps when I simply can't get "the normal" feeling by myself.