I'll repeat the same advice I got when I approached my doctor friends about anxiety.

Look for a clinical psychologist (language issue: I'm Canadian, not positive it is identical in the states) that has experience/specializes in anxiety issues. This was recommended after I'd done a physical - basic blood work and such - but it doesn't sound like you have anything that would be related to physical issues.

The general feel I got was that it takes a bit of work to tailor a solution to your specific situation/triggers and doing it yourself, with your own biases (which are likely to be severe in the area of your anxiety) getting in the way of any kind of self-diagnosis or self-help. Your anxiety attack, if that is what it is, sounds severe enough to seek help.