I've had panic attacks a few times in my life and the last one was basically my brain trying to torture me. I felt like I was on the brink of having a heart attack, then I felt like I couldn't breath, then I felt like I had a severe burn all over my body, then I got hit with terrible nausea. Over and over for the span of just over a week my body just tormented me. 3 ER visits, multiple trips to the doctor, thousands upon thousands burned in medical bills, and I was just told over and over that I was perfectly healthy. Eventually I was prescribed Sertraline (Zoloft) and my torment ceased almost immediately.
I'm sorry about that, that sounds terrible. I've had a single panic attack that lasted for about 20 minutes, and it was already one of the worst things I've ever felt, I can't even imagine what it's like to have a week-long attack.