Have you been checked out for these palpitaions? Do you have a structurally normal heart? If so, then they will not harm you.
Ask you doctor what insignificant changes in your EKG means and ask why you should not worry about them. Then listen, believe and let it go.
My EKG also comes out abnormal but it is nothing. These things are often spit out by a computer and it takes the cardiologist to look at it and say whether it is a really something or not. An EKG is just a diagnostic tool.
When my daughter was 9, an EKG suggested that she had a very serious inherited problem with her heart. I can't remember the name of it now. She had to have an echo to see if this was REAL. The echo was the definate exam for this condition. The echo revealed that what the EKG suggested was not true! She had to go back the next year for another exam just to make sure and again she did not have this condition. Now I could have decided that the EKG said that she had this and not believed her doctor. I could have worried endlessly about it and taught her to worry also. However it would have been a waste of time and life.
There are alot of people whose EKG reads like that but in reality nothing is wrong with there hearts. Let the doctors tell you when you need to worry about something.