How much does a heart scan cost, heart attack warning?

I keep feeling like I'm going to have a heart attack, even though I've never had one before. I keep spooking myself. Or am I?

How much does it cost to get a scan of your heart? I remember seeing on Oprah once that she got a heart scan, and she showed her heart to the audiance. I'm not sure if I'm calling it the right thing. Anyway, it's supposed to be a full evaluation sort of thing on just your heart.

I figured it's better safe than sorry, maybe something's trying to warn me and I need to stop ignoring it. My father died of a heart attack, so I know I sure have the genes for one. However, I'd hate to get an evaluation done and it ends up being nothing..

Ever since my father passed away, my mom's been a single mother and she's struggling to do all that she does do for us. We had to move out of our home because she saw a foreclosure coming. And now she's worried about the rent next month for our apartment. We're having alot of bad luck lately.

What should I do? I'm worried