Have I had a panic attack?

Over the last 3 or 4 days I believe I may have had 3 panic attacks?

Essentially it feels like I can't breathe and my chest hurts so I start to think I'm having a heart attack. I know its not but it feels like I am and then I start to get really upset because I think I'm dying which makes it worse.

When it's happening all I wanna do is move like pace or run, I can't sit still.

The first time it happened I was drinking an energy drink at the time so I drank 2 litres of water and ate an apple because I read that could flush caffeine out of your system but since the same thing has happened again twice, without energy drinks. The 2nd time being the worst because it went on for about an hour and even afterwards when I could breathe again properly I had this pit in my chest. I seem to constantly have this pit in middle of my chest and my tummy now, like there's something is wrong.

Am I getting this all wrong, is it something else or is it all in my head?