Right? This was my second one, too as I had one at my previous job (also a start-up working with the same folks). My first one was apparently incredibly minor because I thought I just had some labored breathing and soreness but that last attack...I wouldn't wish it on anyone.

I too always thought an anxiety attack was someone just freaking out because they can't handle something and they're being a little bit of a baby, etc. Boy did my attitude change completely. I had no idea!!