30M, had this uncommon issue the last maybe ~5 years where I am either just sitting, watching tv, normal everyday stuff, work hobby whatever; not even when I am doing a straining exercise or a stressful event happens either-

and all of a sudden out of nowhere, I feel my heart start beating much harder, I hear it slightly more in my ears and feel it pulsing harder in my body, but where I can really feel it is in between the collar bone in that ‘hole’ above the chest right below the throat, thats where it actually would start to hurt a bit, like its trying to pump/jump out of that collar bone hole. It would last from maybe between 10-25 seconds, and then I’d go back to normal

Ill answer any questions to help with the whatever this issue is pls, if it even is one