I've had panic attacks starting 2yrs back, and my most recent one was a month ago. I've have a quick twitch often (as of someone blows in my ear and it tickles me quick), i get the chills, and often i have trouble breathing or my chest feels pressure, and my heart races after each of these events when i worry, causing me to hyperventalate. Recently i've had sharp pains in the left side of my head and i fear it could be somehting serious like an aneurysm or something...Im scared!