hi im 19 years old and have been dealing with an irregular heartbeat for almost 6 years now. recently my chest has been getting really tight and sometimes causes a slight pain in my left shoulder/ left side of my chest. also, the left side of my face sometimes goes numb when my heart begins messing up. it hasnt always done this but also i get random feelings (feel like twitches or muscle spasms) mostly around my heart area but also other random places on my body. ive been to cardiologists years ago but the monitor never detected anything (most likely because my heart irregularity is irregular.........duh) anyways hoping for some kind of ideas of what could be wrong or if this is serious. thanks