It is not safe to ignore the irregularies of an EKG. You may have developed a medical condition called block in the arteries of heart. By taking EKG at resting posture and while while in stress helps to find out the block pattern. The current results might be mild but it could progress to alarming level.
An EKG irregularity should be followed up with a 2nd opinion and new exam. Assuming the equipment is working properly, the irregularity should be examined again to be sure it exists. If so, then seek appropriate treatment.
I wouldn't worry about them until your doctor gives you are reason to worry. I am sure your doctor will review them and then let you know the results and the actions that need to be taken if there are irregularities. So I would not worry until after you speak with your doctor.
