Could you talk to your medical docotor? Most medical doctors can give a refferal to a T or help with anxiety issues.
I hope this get better for you, you may want to look up some grounding techniques to help when you get like this, One I use alot is counting or focusing on colors to help. There are a list of grounding techniques some where on this site, I can't rember where they are I think it is in the PTSD forum, most of those are targeted towards grounding from flashbacks, but they help with anxiety as well.

Lots of hugs
Silver