Get well soon!

You have many years ahead of you.

Here's some healthy 'natural' type health things you might want to research.

I know nothing of your diet, but if you aren't already i'd strongly recommend eating Organic as much as you can, and try to cut out all processed foods

A dash of Cayanne pepper (I put it on a shot of water) helps increase blood flow. CoQ10 is also an amazing anti-oxidant and phenomenal for your heart health.

I always recommend CBD (the real stuff, there's a lot of fake out there) it's expensive but it really does work wonders from Lazarusnaturals.com they have a big discount for Veterans and those with Disabilities (I would wager that if you showed them your paperwork regarding Heart Attack they'd help you out)

You might also want to look into 'grounding' where you plug a wire into the earth and connect it to your bed sheets. There's some good sheets out there with silver threads that don't feel like you're sleeping on metal, also I don't believe in plugging the grounding wire into the grounding socket, it works best going into the Earth. Grounding has been shown to help with circulation as well.