I have had episodes of this that have made me panic even worse! Not realizing I was really anxious to begin with, I was thinking it was something like a mini stroke or something, even though I didn't have any of the other symptoms. Scary to say the least.
Its nice to see we are not alone in our suffering and these are people that understand what we are going thru. I also, like Jennab14x, worry I won't be able to finish a conversation and will have to run away mid sentence. I haven't done it yet though! :) Just fear it.
I hope you can find some relief from this soon.