Hi, I'd like to help you with your question.
It sounds like you have been on the right path with all the treatments you have tried. They would be all the treatments I would usually recommend to anyone who has anxiety. Most of the time, they would work. However, I do have a few more additional things you can try.
Bipolar II, which by it's nature has periods of agitation called hypomania, may be the cause of your symptoms rather than anxiety. In many people, these episodes of hypomania are so low grade they appear to be anxiety. You may be interpreting the symptoms of Bipolar II as anxiety, therefore no anti anxiety regime or any other treatment for anxiety will work to reduce the symptom. You may need to see your doctor and get on a mood stabilizer. I highly recommend you see your prescribing doctor to rule this possibility out.
If you do not have hypomania, then you may want to try some additional anxiety treatment methods. Here are some options for you:
The Anxiety & Phobia Workbook (New Harbinger Self-Help Workbook) by Edmund J. Bourne - an excellent treatment guide with several different options to help you in finding a way to help yourself with the anxiety.
From Panic to Power: Proven Techniques to Calm Your Anxieties, Conquer Your Fears, and Put You in Control of Your Life by Lucinda Bassett - The Mid West Center and Lucinda Bassett have a great program to help you reduce or eliminate your anxiety.
You can also try a natural supplement regime that helps stabilize moods and calms anxiety symptoms. The supplements include 1000 mg. Omega 3 fatty acid, 100 mg. Magnesium glycenate, and 10 mg. Zinc. Just be sure to clear the supplements with your doctor first before starting them.
I hope this helps you,