Arrhythmias and how they work and affect people?

I've just recently been told i have an arrhythmia.I was told when i was getting height and weight at school and pulse and that sort of thing for football. I have had no clue I've had it. I also had a tommy john reconstruction of my left elbows UCL... THIS YEAR! I want to know if its normal. Its just like 1 2 3 pause, 1 2 3 pause in my heart beat. Our Medical class teacher is also a certified emt and still works and listened to my heart and said that is was a arrhythmia. How can it not have been found earlier. I play football and ran track freshman and sophmore year. I did not this year cause of my elbow. I can lift and run and weve cut back to lifting 2 times a week and work plays and drills in helmets and cleats with no pads and use dummys as people were suppossed to block. What do i do? I'm suppossed to see a dr monday to.

[youngathlete10]

I am a 17 male junior by the way. I will be 18 soon tho.

[CFS56]

Lots of people have arrhythmias and most times it's nothing serious.   Some arrhythmias come and go...you won't have it for a while and then for whatever reason, it will start.  Most likely that is why nobody else has found it.  You probably weren't having it at the time.  Two of the more common types of heart irregularities are premature ventricular contractions (PVC) and  premature atrial contractions (PAC).  Both of these can cause your heart to feel like it skips a beat.  They are usually harmless and can be caused by stress, lack of sleep, too much caffeine, some medications..tons of things.   So don't worry.  Just go to your doctor's appt on Monday and let him check it out and think about what questions you want to ask, I usually write them down so I don't forget.

[youngathlete10]

Well i have felt my heart spasm i guess or skip. not lately tho. also i have been getting a  bit light headed and sometimes dizzy. thanks for the help