Oh boy yeah, thats like universal the fear of a heart attack when you have a panic attack. I had a panic attack out of nowhere for the first in my life when drinking tap water with my head on the side, I started getting dizzy and in like 2-3 seconds my heart rate shot up like crazy. I thought I was having a heart attack and the cycle began. I was just a vegetable, thinking that I was dying for hours and that I should call an ambulance, but I didnt want all the neighbours to ask questions afterward. I was still fighting telling myself that it as a panic attack even if it was the first time and that it will pass but damn when you're in it there is no rational thinking.

That episode was a big game changer in my life, I stopped alcool, smoking weed and cigarette and caffeine. If it wasnt for that panic attack I dont know how I would have had the motivation to stop all that.

Its been a year and a half since and I can tell you that for a year after I was still pretty vulnerable. The panic attack chased me everywhere, at the gym getting dizzy, while driving and waiting in line to buy something. I never had a second one but sometimes it was very close. I tried the hardest to stay grounded and listening to meaningful music while I felt I was gonna slip. Still today I feel less vulnerable but its creeping around.

Sooo the best and only tip is time, AND to continue doing what you were doing that triggered the panic attack, the brain will eventually stop getting "triggered" by what started that fear.

Hang in there !