That's pretty rough. I hope it turns out to be nothing too serious and you get to recover well and move forward with your life.

Dealing with heart stuff is scary, but these days most things can be managed. My dad has had five heart attacks (so far) and he's still kicking. so anything is possible.

Keep positive, draw strength from wherever you can, and always look to the future, and you'll get there, one step at a time.