Scared of having a stress induced heart attack?

Hi,

I'm a 19 year old female and lately i've been hearing stories of people around my age or slightly older having stress induced heart attacks and this has made me very worried.

How stressed would you need to be to have this sort of reaction?

I currently have suspected costochondritis too with general left sided chest discomfort plus discomfort in my collarbone and neck. Starting yesterday I've been having regular heart palpitations as well and all of this is further worrying me about it.

Any advice would be welcome, thank you.

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