Your heart rate and blood pressure look good. EKGs are not precise. One showed my son was having a heart attack at age 9. After further testing we found out his heart is not located where mosts are. It is shifted to the left and it was healthy. So anything showing up on an EKG should be taken as an opinion, not fact. Since you have had several recordings saying something abnormal it would be a good idea to get an echocardiogram and labs which can show disease, anatomy differences, inflammation, blockages. NEVER depend on age like so many doctors do. This is a big reason they miss things! Especially congenital (something someone is born with) or hereditary conditions. Your heart rate speeds up due to stress, anxiety, activity but high heart rate can also make you anxious
You mention that "This anxiety disorder is killing me."
Are you getting treatment for this and going to therapy? If not, it could make a world of difference in your life.
If you are, then something is not working, and it is time to talk with your shrink about a change in treatment.
If you've had serial (more than two EKG's) with normal results it is an indicator that there nothing abnormal. Your results may be landing within a range that is appropriate. I would not let anyone discourage you from visiting emergency from having a chest pain. However your EKG and Lab data seem to lie within normal. If your have a family history of heart problems, you must discuss this with your physician. Best of luck!
With a seemingly normal ECG and feeling good ( no chest discomfort) I would not worry and trust your GP and the hospital ECG's analysts.
I assume that there is some flaw in the auto diagnosis software. Programs always have bugs and your GP should feedback this to the manufacturer of the software, so they can make analyze the software and make small improvements.