It is ok to be scared, especially if you have been there before and do not want to have a repeat of the same frightening symptoms. But, please do not allow yourself to become overly stressed, as that might exacerbate your symptoms and cause you to flare. I know that this is so much easier said than done, but it is also so important.
Reducing your stress is an important part of managing the disease and warding off flares. Having cardiac problems is very frightening, I know and I am not attempting to dismiss your fears. I just want you to try not to let them overcome you.
We are here to help you and to give you comfort..you may rant, rave and vent as much as you need - especially if it helps to alleviate your stress.
I wish you the very best!
Peace and Blessings