HI I CAN UNDERSTAND THE STRESS THAT YOU MUST BE UNDR AND THE WORRY ABOUT THE TEST AS I AM SCARED ABOUT THE TESTS THAT I HAVE HAD AND YET TO HAVE. THE MAIN THING IS IF THIS REALLY WORRYS YOU DISCUSS YOUR FEARS WITH YOUR DR AND THE STAFF WHO WILL BE THERE AT THE TEST. REMEMBER THAT THEY ARE ALL WELL TRAINED AND WOULD STOP THE TEST BEFORE ANY HARM WOULD COME TO YOU AND THAT THEY ARE EQUIPPED TO DEAL WITH ANY EMERGENCIES. BY HAVIING THE TEST YOU WILL GIVE THE DR THE BEST CHANCE TO LOOK AT YOUR CASE AND PLAN A COURSE OF TREATMENT SUITED TO YOUR CASE.