I admire your bravery and resilience in coping with this—as well as your persistence and honesty in working with your therapists. I have two recommendations. The first would be to discuss with your therapist the possibility of using some anti-anxiety medications where a psychiatrist or nurse practitioner could offer evaluation and recommendation. Often the use of medicine can help in breaking the cycle of anxiety while the underlying issue or thought pattern can be understood and treated. Secondly, if a medicine is not what you are interested in, you may want to discuss with your therapist alternative supplements (such as GABA) that may help with anxiety. You may also want to supplement your therapy with journaling if you and your therapist agree that this would be helpful as a journal can help identify the thoughts before and after therapy that may be a clue to defusing them. Finally, meditation may be a great complement to your therapy.
In each of these situations, the relationship you have with your therapist is key to helping resolve the situation. Talking about options and alternatives and agreeing to experiment with them will be a helpful process and you continue to seek answers.
Wishing you patience and peace,
Proof Positive Blog @ PsychCentral