I Just Had An EKG This Morning. It Was Not

I just had an EKG this morning. It was not a normal reading. Just one year ago, I had all the cardiology tests done, which were all normal, pristine as a matter of fact. I had to have it done twice this morning, because the person did not know where to place all the leads. so I had to have it done a second time. So the doctor now wants me to go to a cardiologist AGAIN. I got agitated because the lady did not know what the hell she was doing in the first place. So can agitation/stress reflect a false reading on an EKG?