2cool: I have dealt with serious anxiety issues for decades and I can assure you that it is totally unproductive to link anxiety with Bitachon or lack thereof. Those who would try to make you believe that you have a lack of Bitachon, would have you now try to fight your anxiety in addition to added guilt feelings for being weak in Bitachon. No one ever would tell a diabetic that their illness comes from a lack of Bitachon. Similarly, anxiety that causes you all these physical symptoms is caused by real medical issues rather than a lack of Bitachon. What to do about this? Get yourself to a competent mental health professional, who can evaluate what is going on and determine if you need medications or other treatment. Do this – please without delay. Start with your family physician and make sure you don’t leave his/her office without a name of a good mental health professional. Alternatively, you could ask your Rov for a mental health professional referral – that should also be a good route – but be wary of anyone who tells you that you are lacking this or that attitude or that you could self-treat. Absolutely nonsense and dangerous also (no one tells a diabetic to self-treat without going to a physician). Anxiety that cuases such physical distress as you described must be treated by a professional.
When I was dealing with asevere anxiety a few months ago, I wrote a prayer that described my feelings and my request to the Almighty Rofeh Kol Basar to help me. (I do also receive medical treatment, just for the record). I felt better after reciting this prayer and I would be happy to avail the prayer to you, but I must first check with the editors of YWN if I am allowed to post it in this CR forum.
Hatzlacha Rabboh and may Hashem’s Yeshuah come K’Heref Ayin, as long as you do your Hishtadlus to get professional treatment.